finalised new shoreline detection method

data/L8/BROULEE/BROULEE_epsgcode.pkl

@@ -0,0 +1 @@
+<EFBFBD>M<>.

data/L8/MURI/MURI_epsgcode.pkl

@@ -0,0 +1 @@
+<EFBFBD>M\.

data/L8/MURI2/MURI2_epsgcode.pkl

@@ -0,0 +1 @@
+<EFBFBD>M\.

download_images_L8.py

@@ -84,11 +84,23 @@ input_col = ee.ImageCollection('LANDSAT/LC08/C01/T1_RT_TOA')
 #            [175.853956, -36.998749],
 #            [175.852115, -36.985414]]];  
 # Location (Duck)
-polygon = [[[-75.766220, 36.195928], 
+#polygon = [[[-75.766220, 36.195928], 
-            [-75.748282, 36.196401],
+#            [-75.748282, 36.196401],
-            [-75.738851, 36.173974],
+#            [-75.738851, 36.173974],
-            [-75.763546, 36.174249],
+#            [-75.763546, 36.174249],
-            [-75.766220, 36.195928]]];
+#            [-75.766220, 36.195928]]];
+# Location (Broulee Island)
+#polygon = [[[150.173557, -35.847138], 
+#            [150.196164, -35.848064],
+#            [150.195143, -35.869967],
+#            [150.172779, -35.861760],
+#            [150.173557, -35.847138]]];
+# Location (Rarotonga, Muri lagoon)
+polygon = [[[-159.732071, -21.241348], 
+            [-159.719820, -21.242892],
+            [-159.720006, -21.261134],
+            [-159.731592, -21.258875],
+            [-159.732071, -21.241348]]];
 
 # dates
 start_date = '2013-01-01'
@@ -106,7 +118,10 @@ satname = 'L8'
 #sitename = 'OLDBAR'
 #sitename = 'SANDMOTOR'
 #sitename = 'TAIRUA'
-sitename = 'DUCK'
+#sitename = 'DUCK'
+#sitename = 'BROULEE'
+sitename = 'MURI'
+
 
 suffix = '.tif'
 filepath = os.path.join(os.getcwd(), 'data', satname, sitename)

functions/sds.py

@@ -848,7 +848,7 @@ def find_wl_contours2(im_ms_ps, im_labels, cloud_mask, buffer_size, plot_bool):
     im_mwi_buffer = np.copy(im_mwi)
     im_mwi_buffer[~im_buffer] = np.nan
     contours_wi = measure.find_contours(im_wi_buffer, t_wi)
-    contours_mwi = measure.find_contours(im_mwi_buffer, t_mwi)
+    contours_mwi = measure.find_contours(im_mwi, t_mwi) # WARNING (on entire image)
     
     if plot_bool:
         
@@ -861,9 +861,9 @@ def find_wl_contours2(im_ms_ps, im_labels, cloud_mask, buffer_size, plot_bool):
             im[im_labels[:,:,k],2] = colours[k,2]
         
         fig = plt.figure()
-        gs = gridspec.GridSpec(2, 2, width_ratios=[3, 1])
+        gs = gridspec.GridSpec(3, 3, height_ratios=[1, 1, 3])
         
-        ax1 = fig.add_subplot(gs[0,0]) 
+        ax1 = fig.add_subplot(gs[0,:]) 
         vals = plt.hist(int_water[:,0], bins=100, label='water')
         plt.hist(int_sand[:,0], bins=100, alpha=0.5, label='sand')
         plt.hist(int_swash[:,0], bins=100, alpha=0.5, label='swash')
@@ -871,7 +871,7 @@ def find_wl_contours2(im_ms_ps, im_labels, cloud_mask, buffer_size, plot_bool):
         plt.legend()
         plt.title('Water Index NIR-G')
         
-        ax2 = fig.add_subplot(gs[1,0], sharex=ax1)
+        ax2 = fig.add_subplot(gs[1,:], sharex=ax1)
         vals = plt.hist(int_water[:,1], bins=100, label='water')
         plt.hist(int_sand[:,1], bins=100, alpha=0.5, label='sand')
         plt.hist(int_swash[:,1], bins=100, alpha=0.5, label='swash')
@@ -879,12 +879,34 @@ def find_wl_contours2(im_ms_ps, im_labels, cloud_mask, buffer_size, plot_bool):
         plt.legend()
         plt.title('Modified Water Index SWIR-G')        
         
-        ax3 = fig.add_subplot(gs[:,1])
+        ax3 = fig.add_subplot(gs[2,0])
         plt.imshow(im)
-#        for i,contour in enumerate(contours_wi): plt.plot(contour[:, 1], contour[:, 0], linewidth=2, color='r')
         for i,contour in enumerate(contours_mwi): plt.plot(contour[:, 1], contour[:, 0], linewidth=3, color='k')
+        for i,contour in enumerate(contours_wi): plt.plot(contour[:, 1], contour[:, 0], linestyle='--', linewidth=1, color='w')
+        plt.grid(False)
+        plt.xticks([])
+        plt.yticks([])
 
-        plt.gcf().set_size_inches(17.99,7.55)
+        ax4 = fig.add_subplot(gs[2,1], sharex=ax3, sharey=ax3)
+        plt.imshow(im_display)
+        for i,contour in enumerate(contours_mwi): plt.plot(contour[:, 1], contour[:, 0], linewidth=3, color='k')
+        for i,contour in enumerate(contours_wi): plt.plot(contour[:, 1], contour[:, 0], linestyle='--', linewidth=1, color='w')
+        plt.grid(False)     
+        plt.xticks([])
+        plt.yticks([])
+        
+        ax5 = fig.add_subplot(gs[2,2], sharex=ax3, sharey=ax3)
+        plt.imshow(im_mwi, cmap='seismic')
+        for i,contour in enumerate(contours_mwi): plt.plot(contour[:, 1], contour[:, 0], linewidth=3, color='k')
+        for i,contour in enumerate(contours_wi): plt.plot(contour[:, 1], contour[:, 0], linestyle='--', linewidth=1, color='w')
+        plt.grid(False)
+        plt.xticks([])
+        plt.yticks([])
+        
+        
+#        plt.gcf().set_size_inches(17.99,7.55)
+        mng = plt.get_current_fig_manager()                                         
+        mng.window.showMaximized()
         plt.gcf().set_tight_layout(True)
         plt.draw()
 

functions/utils.py

@@ -59,3 +59,11 @@ def find_indices(lst, condition):
 def reject_outliers(data, m=2):
     "rejects outliers in a numpy array"
     return data[abs(data - np.mean(data)) < m * np.std(data)]
+
+def duplicates_dict(lst):
+    "return duplicates and indices"
+    # nested function
+    def duplicates(lst, item):
+            return [i for i, x in enumerate(lst) if x == item]
+        
+    return dict((x, duplicates(lst, x)) for x in set(lst) if lst.count(x) > 1)

make_gif.py

@@ -82,12 +82,12 @@ for i in idx_nocloud:
     fn_pan = os.path.join(file_path_pan, file_names_pan[i])
     data = gdal.Open(fn_pan, gdal.GA_ReadOnly)
     georef = np.array(data.GetGeoTransform())
-    bands = [data.GetRasterBand(i + 1).ReadAsArray() for i in range(data.RasterCount)]
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
     im_pan = np.stack(bands, 2)[:,:,0]
     # read ms image
     fn_ms = os.path.join(file_path_ms, file_names_ms[i])
     data = gdal.Open(fn_ms, gdal.GA_ReadOnly)
-    bands = [data.GetRasterBand(i + 1).ReadAsArray() for i in range(data.RasterCount)]
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
     im_ms = np.stack(bands, 2)
     # cloud mask
     im_qa = im_ms[:,:,5]

make_gif_classified.py

@@ -95,14 +95,14 @@ for i in range(N):
     fn_pan = os.path.join(file_path_pan, file_names_pan[i])
     data = gdal.Open(fn_pan, gdal.GA_ReadOnly)
     georef = np.array(data.GetGeoTransform())
-    bands = [data.GetRasterBand(i + 1).ReadAsArray() for i in range(data.RasterCount)]
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
     im_pan = np.stack(bands, 2)[:,:,0]
     nrow = im_pan.shape[0]
     ncol = im_pan.shape[1]
     # read ms image
     fn_ms = os.path.join(file_path_ms, file_names_ms[i])
     data = gdal.Open(fn_ms, gdal.GA_ReadOnly)
-    bands = [data.GetRasterBand(i + 1).ReadAsArray() for i in range(data.RasterCount)]
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
     im_ms = np.stack(bands, 2)
     # cloud mask
     im_qa = im_ms[:,:,5]

make_gif_classified_sl.py

@@ -0,0 +1,228 @@
+# -*- coding: utf-8 -*-
+
+#==========================================================#
+# Run Neural Network on image to extract sandy pixels
+#==========================================================#
+
+# Initial settings
+import os
+import numpy as np
+import matplotlib.pyplot as plt
+import matplotlib.patches as mpatches
+import matplotlib.lines as mlines
+from matplotlib import gridspec
+from datetime import datetime, timedelta
+import pytz
+import ee
+import pdb
+import time
+import pandas as pd
+# other modules
+from osgeo import gdal, ogr, osr
+import pickle
+import matplotlib.cm as cm
+from pylab import ginput
+
+# image processing modules
+import skimage.filters as filters 
+import skimage.exposure as exposure
+import skimage.transform as transform
+import sklearn.decomposition as decomposition
+import skimage.measure as measure
+import skimage.morphology as morphology
+from scipy import ndimage
+import imageio
+
+
+# machine learning modules
+from sklearn.model_selection import train_test_split
+from sklearn.neural_network import MLPClassifier
+from sklearn.preprocessing import StandardScaler, Normalizer 
+from sklearn.externals import joblib
+
+# import own modules
+import functions.utils as utils
+import functions.sds as sds
+
+# some settings
+np.seterr(all='ignore') # raise/ignore divisions by 0 and nans
+plt.rcParams['axes.grid'] = True
+plt.rcParams['figure.max_open_warning'] = 100
+ee.Initialize()
+
+# parameters
+cloud_thresh = 0.2      # threshold for cloud cover
+plot_bool = False      # if you want the plots
+prob_high = 100        # upper probability to clip and rescale pixel intensity
+min_contour_points = 100# minimum number of points contained in each water line
+output_epsg = 28356     # GDA94 / MGA Zone 56
+buffer_size = 10        # radius (in pixels) of disk for buffer (pixel classification)
+min_beach_size = 10     # number of pixels in a beach (pixel classification)
+
+# load metadata (timestamps and epsg code) for the collection
+satname = 'L8'
+#sitename = 'NARRA_all'
+#sitename = 'NARRA'
+#sitename = 'OLDBAR'
+#sitename = 'OLDBAR_inlet'
+#sitename = 'SANDMOTOR'
+#sitename = 'TAIRUA'
+#sitename = 'DUCK'
+#sitename = 'BROULEE'
+sitename = 'MURI'
+
+
+# Load metadata
+filepath = os.path.join(os.getcwd(), 'data', satname, sitename)
+with open(os.path.join(filepath, sitename + '_timestamps' + '.pkl'), 'rb') as f:
+    timestamps = pickle.load(f)
+timestamps_sorted = sorted(timestamps)
+daysall = (datetime(2019,1,1,tzinfo=pytz.utc) - datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds()
+# path to images
+file_path_pan = os.path.join(os.getcwd(), 'data', satname, sitename, 'pan')
+file_path_ms = os.path.join(os.getcwd(), 'data', satname, sitename, 'ms')
+file_names_pan = os.listdir(file_path_pan)
+file_names_ms = os.listdir(file_path_ms)
+N = len(file_names_pan)
+
+# initialise some variables
+idx_skipped = []
+idx_nocloud = []
+n_features = 10
+train_pos = np.nan*np.ones((1,n_features))
+train_neg = np.nan*np.ones((1,n_features))
+columns = ('B','G','R','NIR','SWIR','Pan','WI','VI','BR', 'mWI', 'class')
+
+#%%
+for i in range(N):
+    # read pan image
+    fn_pan = os.path.join(file_path_pan, file_names_pan[i])
+    data = gdal.Open(fn_pan, gdal.GA_ReadOnly)
+    georef = np.array(data.GetGeoTransform())
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
+    im_pan = np.stack(bands, 2)[:,:,0]
+    nrow = im_pan.shape[0]
+    ncol = im_pan.shape[1]
+    # read ms image
+    fn_ms = os.path.join(file_path_ms, file_names_ms[i])
+    data = gdal.Open(fn_ms, gdal.GA_ReadOnly)
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
+    im_ms = np.stack(bands, 2)
+    # cloud mask
+    im_qa = im_ms[:,:,5]
+    cloud_mask = sds.create_cloud_mask(im_qa, satname, plot_bool)
+    cloud_mask = transform.resize(cloud_mask, (im_pan.shape[0], im_pan.shape[1]),
+                                order=0, preserve_range=True, 
+                                mode='constant').astype('bool_')    
+    # resize the image using bilinear interpolation (order 1)
+    im_ms = transform.resize(im_ms,(im_pan.shape[0], im_pan.shape[1]),
+                             order=1, preserve_range=True, mode='constant')
+    # check if -inf or nan values and add to cloud mask
+    im_inf = np.isin(im_ms[:,:,0], -np.inf)
+    im_nan = np.isnan(im_ms[:,:,0])
+    cloud_mask = np.logical_or(np.logical_or(cloud_mask, im_inf), im_nan)
+    # skip if cloud cover is more than the threshold
+    cloud_cover = sum(sum(cloud_mask.astype(int)))/(cloud_mask.shape[0]*cloud_mask.shape[1])
+    if cloud_cover > cloud_thresh:
+        print('skip ' + str(i) + ' - cloudy (' + str(np.round(cloud_cover*100).astype(int)) + '%)')
+        idx_skipped.append(i)
+        continue
+    idx_nocloud.append(i)
+            
+    # pansharpen rgb image
+    im_ms_ps = sds.pansharpen(im_ms[:,:,[0,1,2]], im_pan, cloud_mask, plot_bool)
+    # add down-sized bands for NIR and SWIR (since pansharpening is not possible)
+    im_ms_ps = np.append(im_ms_ps, im_ms[:,:,[3,4]], axis=2) 
+    
+    im_classif, im_labels = sds.classify_image_NN(im_ms_ps, im_pan, cloud_mask, min_beach_size, plot_bool)
+        
+    # if there are no sand pixels, skip the image (maybe later change the detection method with old method)
+    if sum(sum(im_labels[:,:,0])) == 0 :
+        print('skip ' + str(i) + ' - no sand')
+        idx_skipped.append(i)
+        continue
+    
+    contours_wi, contours_mwi = sds.find_wl_contours2(im_ms_ps, im_labels, cloud_mask, buffer_size, False)
+    
+    
+    im_display = sds.rescale_image_intensity(im_ms_ps[:,:,[2,1,0]], cloud_mask, 100, False)
+    im = np.copy(im_display)
+    # define colours for plot
+    colours = np.array([[1,128/255,0/255],[204/255,1,1],[0,0,204/255]])
+    for k in range(0,im_labels.shape[2]):
+        im[im_labels[:,:,k],0] = colours[k,0]
+        im[im_labels[:,:,k],1] = colours[k,1]
+        im[im_labels[:,:,k],2] = colours[k,2]
+    
+     
+#    fig = plt.figure()
+#    plt.suptitle(date_im, fontsize=17, fontweight='bold')
+#    ax1 = plt.subplot(121)
+#    plt.imshow(im_display)
+#    plt.axis('off')
+#    ax2 = plt.subplot(122, sharex=ax1, sharey=ax1)
+#    plt.imshow(im)
+#    plt.axis('off')
+#    plt.gcf().set_size_inches(17.99,7.55)
+#    plt.tight_layout() 
+#    orange_patch = mpatches.Patch(color=[1,128/255,0/255], label='sand')
+#    white_patch = mpatches.Patch(color=[204/255,1,1], label='swash/whitewater')
+#    blue_patch = mpatches.Patch(color=[0,0,204/255], label='water')
+#    plt.legend(handles=[orange_patch,white_patch,blue_patch], bbox_to_anchor=(0.95, 0.2))
+#    plt.draw()
+    
+    date_im = timestamps_sorted[i].strftime('%d %b %Y')
+    daysnow = (timestamps_sorted[i] - datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds()
+    
+    fig = plt.figure()
+    gs = gridspec.GridSpec(2, 2, height_ratios=[1, 20]) 
+
+    ax1 = fig.add_subplot(gs[0,:]) 
+    plt.plot(0,0,'ko',daysall,0,'ko')
+    plt.plot([0,daysall],[0,0],'k-')
+    plt.plot(daysnow,0,'ro')
+    plt.text(0,0.05,'2013')
+    plt.text(daysall,0.05,'2019')
+    plt.plot((datetime(2014,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2015,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2016,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2017,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2018,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.text((datetime(2014,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2014')
+    plt.text((datetime(2015,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2015')
+    plt.text((datetime(2016,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2016')
+    plt.text((datetime(2017,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2017')
+    plt.text((datetime(2018,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2018')
+
+    plt.axis('off')
+
+    ax2 = fig.add_subplot(gs[1,0])
+    plt.imshow(im_display)
+    plt.axis('off')
+    plt.title(date_im, fontsize=17, fontweight='bold')
+
+    ax3 = fig.add_subplot(gs[1,1])
+    plt.imshow(im)
+    for l,contour in enumerate(contours_mwi): plt.plot(contour[:, 1], contour[:, 0], linewidth=2, color='k', linestyle='--')
+    plt.axis('off')
+    orange_patch = mpatches.Patch(color=[1,128/255,0/255], label='sand')
+    white_patch = mpatches.Patch(color=[204/255,1,1], label='swash/whitewater')
+    blue_patch = mpatches.Patch(color=[0,0,204/255], label='water')
+    black_line = mlines.Line2D([],[],color='k',linestyle='-', label='shoreline')
+    plt.legend(handles=[orange_patch,white_patch,blue_patch, black_line], bbox_to_anchor=(0.95, 0.2))
+    
+    plt.gcf().set_size_inches(17.99,7.55)
+    plt.gcf().set_tight_layout(True)
+
+    plt.draw()
+    plt.savefig(os.path.join(filepath,'plots_classif', file_names_pan[i][len(satname)+1+len(sitename)+1:len(satname)+1+len(sitename)+1+10] + '.jpg'), dpi = 300)
+    plt.close()
+    
+# create gif
+images = []
+filenames = os.listdir(os.path.join(filepath, 'plots_classif'))
+with imageio.get_writer(sitename + '.gif', mode='I', duration=0.4) as writer:
+    for filename in filenames:
+        image = imageio.imread(os.path.join(filepath,'plots_classif',filename))
+        writer.append_data(image)
+    

make_gif_classified_sl_MURI.py

@@ -0,0 +1,193 @@
+# -*- coding: utf-8 -*-
+
+#==========================================================#
+# Run Neural Network on image to extract sandy pixels
+#==========================================================#
+
+# Initial settings
+import os
+import numpy as np
+import matplotlib.pyplot as plt
+import matplotlib.patches as mpatches
+import matplotlib.lines as mlines
+from matplotlib import gridspec
+from datetime import datetime, timedelta
+import pytz
+import ee
+import pdb
+import time
+import pandas as pd
+# other modules
+from osgeo import gdal, ogr, osr
+import pickle
+import matplotlib.cm as cm
+from pylab import ginput
+
+# image processing modules
+import skimage.filters as filters 
+import skimage.exposure as exposure
+import skimage.transform as transform
+import sklearn.decomposition as decomposition
+import skimage.measure as measure
+import skimage.morphology as morphology
+from scipy import ndimage
+import imageio
+
+
+# machine learning modules
+from sklearn.model_selection import train_test_split
+from sklearn.neural_network import MLPClassifier
+from sklearn.preprocessing import StandardScaler, Normalizer 
+from sklearn.externals import joblib
+
+# import own modules
+import functions.utils as utils
+import functions.sds as sds
+
+# some settings
+np.seterr(all='ignore') # raise/ignore divisions by 0 and nans
+plt.rcParams['axes.grid'] = True
+plt.rcParams['figure.max_open_warning'] = 100
+ee.Initialize()
+
+# parameters
+cloud_thresh = 0.5      # threshold for cloud cover
+plot_bool = False      # if you want the plots
+prob_high = 100        # upper probability to clip and rescale pixel intensity
+min_contour_points = 30# minimum number of points contained in each water line
+output_epsg = 28356     # GDA94 / MGA Zone 56
+buffer_size = 10        # radius (in pixels) of disk for buffer (pixel classification)
+min_beach_size = 10     # number of pixels in a beach (pixel classification)
+
+# load metadata (timestamps and epsg code) for the collection
+satname = 'L8'
+#sitename = 'NARRA_all'
+#sitename = 'NARRA'
+#sitename = 'OLDBAR'
+#sitename = 'OLDBAR_inlet'
+#sitename = 'SANDMOTOR'
+#sitename = 'TAIRUA'
+#sitename = 'DUCK'
+#sitename = 'BROULEE'
+sitename = 'MURI2'
+
+
+# Load metadata
+filepath = os.path.join(os.getcwd(), 'data', satname, sitename)
+with open(os.path.join(filepath, sitename + '_timestamps' + '.pkl'), 'rb') as f:
+    timestamps = pickle.load(f)
+timestamps_sorted = sorted(timestamps)
+daysall = (datetime(2019,1,1,tzinfo=pytz.utc) - datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds()
+# path to images
+file_path_pan = os.path.join(os.getcwd(), 'data', satname, sitename, 'pan')
+file_path_ms = os.path.join(os.getcwd(), 'data', satname, sitename, 'ms')
+file_names_pan = os.listdir(file_path_pan)
+file_names_ms = os.listdir(file_path_ms)
+N = len(file_names_pan)
+
+# initialise some variables
+idx_skipped = []
+idx_nocloud = []
+n_features = 10
+train_pos = np.nan*np.ones((1,n_features))
+train_neg = np.nan*np.ones((1,n_features))
+columns = ('B','G','R','NIR','SWIR','Pan','WI','VI','BR', 'mWI', 'class')
+
+#%%
+for i in range(N):
+    # read pan image
+    fn_pan = os.path.join(file_path_pan, file_names_pan[i])
+    data = gdal.Open(fn_pan, gdal.GA_ReadOnly)
+    georef = np.array(data.GetGeoTransform())
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
+    im_pan = np.stack(bands, 2)[:,:,0]
+    nrow = im_pan.shape[0]
+    ncol = im_pan.shape[1]
+    # read ms image
+    fn_ms = os.path.join(file_path_ms, file_names_ms[i])
+    data = gdal.Open(fn_ms, gdal.GA_ReadOnly)
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
+    im_ms = np.stack(bands, 2)
+    # cloud mask
+    im_qa = im_ms[:,:,5]
+    cloud_mask = sds.create_cloud_mask(im_qa, satname, plot_bool)
+    cloud_mask = transform.resize(cloud_mask, (im_pan.shape[0], im_pan.shape[1]),
+                                order=0, preserve_range=True, 
+                                mode='constant').astype('bool_')    
+    # resize the image using bilinear interpolation (order 1)
+    im_ms = transform.resize(im_ms,(im_pan.shape[0], im_pan.shape[1]),
+                             order=1, preserve_range=True, mode='constant')
+    # check if -inf or nan values and add to cloud mask
+    im_inf = np.isin(im_ms[:,:,0], -np.inf)
+    im_nan = np.isnan(im_ms[:,:,0])
+    cloud_mask = np.logical_or(np.logical_or(cloud_mask, im_inf), im_nan)
+    # skip if cloud cover is more than the threshold
+    cloud_cover = sum(sum(cloud_mask.astype(int)))/(cloud_mask.shape[0]*cloud_mask.shape[1])
+    if cloud_cover > cloud_thresh:
+        print('skip ' + str(i) + ' - cloudy (' + str(np.round(cloud_cover*100).astype(int)) + '%)')
+        idx_skipped.append(i)
+        continue
+    idx_nocloud.append(i)
+            
+    # pansharpen rgb image
+    im_ms_ps = sds.pansharpen(im_ms[:,:,[0,1,2]], im_pan, cloud_mask, plot_bool)
+    # add down-sized bands for NIR and SWIR (since pansharpening is not possible)
+    im_ms_ps = np.append(im_ms_ps, im_ms[:,:,[3,4]], axis=2) 
+    
+    # extract shorelines (old method)
+    im_ndwi = sds.nd_index(im_ms_ps[:,:,3], im_ms_ps[:,:,1], cloud_mask, plot_bool)
+    wl_pix = sds.find_wl_contours(im_ndwi, cloud_mask, min_contour_points, plot_bool)
+    
+    im_display = sds.rescale_image_intensity(im_ms_ps[:,:,[2,1,0]], cloud_mask, 100, False)
+
+    date_im = timestamps_sorted[i].strftime('%d %b %Y')
+    daysnow = (timestamps_sorted[i] - datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds()
+
+    fig = plt.figure()
+    gs = gridspec.GridSpec(2, 2, height_ratios=[1, 20]) 
+
+    ax1 = fig.add_subplot(gs[0,:]) 
+    plt.plot(0,0,'ko',daysall,0,'ko')
+    plt.plot([0,daysall],[0,0],'k-')
+    plt.plot(daysnow,0,'ro')
+    plt.text(0,0.05,'2013')
+    plt.text(daysall,0.05,'2019')
+    plt.plot((datetime(2014,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2015,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2016,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2017,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2018,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.text((datetime(2014,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2014')
+    plt.text((datetime(2015,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2015')
+    plt.text((datetime(2016,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2016')
+    plt.text((datetime(2017,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2017')
+    plt.text((datetime(2018,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2018')
+    plt.axis('off')
+
+#    ax2 = fig.add_subplot(gs[1,0])
+#    plt.imshow(im_display)
+#    plt.axis('off')
+#    plt.title(date_im, fontsize=17, fontweight='bold')
+
+    ax3 = fig.add_subplot(gs[1,:])
+    plt.imshow(im_display)
+    for l,contour in enumerate(wl_pix): plt.plot(contour[:, 1], contour[:, 0], linewidth=2, color='k', linestyle='--')
+    plt.title(date_im, fontsize=17, fontweight='bold')
+    plt.axis('off')
+    
+    plt.gcf().set_size_inches(5.34,9.18)
+    plt.gcf().set_tight_layout(True)
+
+    plt.draw()
+    
+    plt.savefig(os.path.join(filepath,'plots_classif', file_names_pan[i][len(satname)+1+len(sitename)+1:len(satname)+1+len(sitename)+1+10] + '.jpg'), dpi = 300)
+    plt.close()
+    
+# create gif
+images = []
+filenames = os.listdir(os.path.join(filepath, 'plots_classif'))
+with imageio.get_writer(sitename + '_final.gif', mode='I', duration=0.6) as writer:
+    for filename in filenames:
+        image = imageio.imread(os.path.join(filepath,'plots_classif',filename))
+        writer.append_data(image)
+    

make_gif_classified_sl_NARRA.py

@@ -0,0 +1,227 @@
+# -*- coding: utf-8 -*-
+
+#==========================================================#
+# Run Neural Network on image to extract sandy pixels
+#==========================================================#
+
+# Initial settings
+import os
+import numpy as np
+import matplotlib.pyplot as plt
+import matplotlib.patches as mpatches
+import matplotlib.lines as mlines
+from matplotlib import gridspec
+from datetime import datetime, timedelta
+import pytz
+import ee
+import pdb
+import time
+import pandas as pd
+# other modules
+from osgeo import gdal, ogr, osr
+import pickle
+import matplotlib.cm as cm
+from pylab import ginput
+
+# image processing modules
+import skimage.filters as filters 
+import skimage.exposure as exposure
+import skimage.transform as transform
+import sklearn.decomposition as decomposition
+import skimage.measure as measure
+import skimage.morphology as morphology
+from scipy import ndimage
+import imageio
+
+
+# machine learning modules
+from sklearn.model_selection import train_test_split
+from sklearn.neural_network import MLPClassifier
+from sklearn.preprocessing import StandardScaler, Normalizer 
+from sklearn.externals import joblib
+
+# import own modules
+import functions.utils as utils
+import functions.sds as sds
+
+# some settings
+np.seterr(all='ignore') # raise/ignore divisions by 0 and nans
+plt.rcParams['axes.grid'] = True
+plt.rcParams['figure.max_open_warning'] = 100
+ee.Initialize()
+
+# parameters
+cloud_thresh = 0.2      # threshold for cloud cover
+plot_bool = False      # if you want the plots
+prob_high = 100        # upper probability to clip and rescale pixel intensity
+min_contour_points = 100# minimum number of points contained in each water line
+output_epsg = 28356     # GDA94 / MGA Zone 56
+buffer_size = 10        # radius (in pixels) of disk for buffer (pixel classification)
+min_beach_size = 20     # number of pixels in a beach (pixel classification)
+
+# load metadata (timestamps and epsg code) for the collection
+satname = 'L8'
+#sitename = 'NARRA_all'
+sitename = 'NARRA'
+#sitename = 'OLDBAR'
+#sitename = 'OLDBAR_inlet'
+#sitename = 'SANDMOTOR'
+#sitename = 'TAIRUA'
+#sitename = 'DUCK'
+#sitename = 'BROULEE'
+
+# Load metadata
+filepath = os.path.join(os.getcwd(), 'data', satname, sitename)
+with open(os.path.join(filepath, sitename + '_timestamps' + '.pkl'), 'rb') as f:
+    timestamps = pickle.load(f)
+timestamps_sorted = sorted(timestamps)
+daysall = (datetime(2019,1,1,tzinfo=pytz.utc) - datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds()
+# path to images
+file_path_pan = os.path.join(os.getcwd(), 'data', satname, sitename, 'pan')
+file_path_ms = os.path.join(os.getcwd(), 'data', satname, sitename, 'ms')
+file_names_pan = os.listdir(file_path_pan)
+file_names_ms = os.listdir(file_path_ms)
+N = len(file_names_pan)
+
+# initialise some variables
+idx_skipped = []
+idx_nocloud = []
+n_features = 10
+train_pos = np.nan*np.ones((1,n_features))
+train_neg = np.nan*np.ones((1,n_features))
+columns = ('B','G','R','NIR','SWIR','Pan','WI','VI','BR', 'mWI', 'class')
+
+#%%
+for i in range(N):
+    # read pan image
+    fn_pan = os.path.join(file_path_pan, file_names_pan[i])
+    data = gdal.Open(fn_pan, gdal.GA_ReadOnly)
+    georef = np.array(data.GetGeoTransform())
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
+    im_pan = np.stack(bands, 2)[:,:,0]
+    nrow = im_pan.shape[0]
+    ncol = im_pan.shape[1]
+    # read ms image
+    fn_ms = os.path.join(file_path_ms, file_names_ms[i])
+    data = gdal.Open(fn_ms, gdal.GA_ReadOnly)
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
+    im_ms = np.stack(bands, 2)
+    # cloud mask
+    im_qa = im_ms[:,:,5]
+    cloud_mask = sds.create_cloud_mask(im_qa, satname, plot_bool)
+    cloud_mask = transform.resize(cloud_mask, (im_pan.shape[0], im_pan.shape[1]),
+                                order=0, preserve_range=True, 
+                                mode='constant').astype('bool_')    
+    # resize the image using bilinear interpolation (order 1)
+    im_ms = transform.resize(im_ms,(im_pan.shape[0], im_pan.shape[1]),
+                             order=1, preserve_range=True, mode='constant')
+    # check if -inf or nan values and add to cloud mask
+    im_inf = np.isin(im_ms[:,:,0], -np.inf)
+    im_nan = np.isnan(im_ms[:,:,0])
+    cloud_mask = np.logical_or(np.logical_or(cloud_mask, im_inf), im_nan)
+    # skip if cloud cover is more than the threshold
+    cloud_cover = sum(sum(cloud_mask.astype(int)))/(cloud_mask.shape[0]*cloud_mask.shape[1])
+    if cloud_cover > cloud_thresh:
+        print('skip ' + str(i) + ' - cloudy (' + str(np.round(cloud_cover*100).astype(int)) + '%)')
+        idx_skipped.append(i)
+        continue
+    idx_nocloud.append(i)
+            
+    # pansharpen rgb image
+    im_ms_ps = sds.pansharpen(im_ms[:,:,[0,1,2]], im_pan, cloud_mask, plot_bool)
+    # add down-sized bands for NIR and SWIR (since pansharpening is not possible)
+    im_ms_ps = np.append(im_ms_ps, im_ms[:,:,[3,4]], axis=2) 
+    
+    im_classif, im_labels = sds.classify_image_NN(im_ms_ps, im_pan, cloud_mask, min_beach_size, plot_bool)
+        
+    # if there are no sand pixels, skip the image (maybe later change the detection method with old method)
+    if sum(sum(im_labels[:,:,0])) == 0 :
+        print('skip ' + str(i) + ' - no sand')
+        idx_skipped.append(i)
+        continue
+    
+    contours_wi, contours_mwi = sds.find_wl_contours2(im_ms_ps, im_labels, cloud_mask, buffer_size, False)
+    
+    
+    im_display = sds.rescale_image_intensity(im_ms_ps[:,:,[2,1,0]], cloud_mask, 100, False)
+    im = np.copy(im_display)
+    # define colours for plot
+    colours = np.array([[1,128/255,0/255],[204/255,1,1],[0,0,204/255]])
+    for k in range(0,im_labels.shape[2]):
+        im[im_labels[:,:,k],0] = colours[k,0]
+        im[im_labels[:,:,k],1] = colours[k,1]
+        im[im_labels[:,:,k],2] = colours[k,2]
+    
+     
+#    fig = plt.figure()
+#    plt.suptitle(date_im, fontsize=17, fontweight='bold')
+#    ax1 = plt.subplot(121)
+#    plt.imshow(im_display)
+#    plt.axis('off')
+#    ax2 = plt.subplot(122, sharex=ax1, sharey=ax1)
+#    plt.imshow(im)
+#    plt.axis('off')
+#    plt.gcf().set_size_inches(17.99,7.55)
+#    plt.tight_layout() 
+#    orange_patch = mpatches.Patch(color=[1,128/255,0/255], label='sand')
+#    white_patch = mpatches.Patch(color=[204/255,1,1], label='swash/whitewater')
+#    blue_patch = mpatches.Patch(color=[0,0,204/255], label='water')
+#    plt.legend(handles=[orange_patch,white_patch,blue_patch], bbox_to_anchor=(0.95, 0.2))
+#    plt.draw()
+    
+    date_im = timestamps_sorted[i].strftime('%d %b %Y')
+    daysnow = (timestamps_sorted[i] - datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds()
+    
+    fig = plt.figure()
+    gs = gridspec.GridSpec(2, 2, height_ratios=[1, 20]) 
+
+    ax1 = fig.add_subplot(gs[0,:]) 
+    plt.plot(0,0,'ko',daysall,0,'ko')
+    plt.plot([0,daysall],[0,0],'k-')
+    plt.plot(daysnow,0,'ro')
+    plt.text(0,0.05,'2013')
+    plt.text(daysall,0.05,'2019')
+    plt.plot((datetime(2014,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2015,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2016,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2017,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2018,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.text((datetime(2014,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2014')
+    plt.text((datetime(2015,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2015')
+    plt.text((datetime(2016,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2016')
+    plt.text((datetime(2017,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2017')
+    plt.text((datetime(2018,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2018')
+
+    plt.axis('off')
+
+#    ax2 = fig.add_subplot(gs[1,0])
+#    plt.imshow(im_display)
+#    plt.axis('off')
+#    plt.title(date_im, fontsize=17, fontweight='bold')
+
+    ax3 = fig.add_subplot(gs[1,:])
+    plt.imshow(im)
+    for l,contour in enumerate(contours_mwi): plt.plot(contour[:, 1], contour[:, 0], linewidth=2, color='k', linestyle='--')
+    plt.axis('off')
+    orange_patch = mpatches.Patch(color=[1,128/255,0/255], label='sand')
+    white_patch = mpatches.Patch(color=[204/255,1,1], label='swash/whitewater')
+    blue_patch = mpatches.Patch(color=[0,0,204/255], label='water')
+    black_line = mlines.Line2D([],[],color='k',linestyle='--', label='shoreline')
+    plt.legend(handles=[orange_patch,white_patch,blue_patch, black_line], bbox_to_anchor=(0.6, 0.6))
+    plt.title(date_im, fontsize=17, fontweight='bold')
+    
+    plt.gcf().set_size_inches(5.34,9.18)
+    plt.gcf().set_tight_layout(True)
+
+    plt.draw()
+    plt.savefig(os.path.join(filepath,'plots_classif', file_names_pan[i][len(satname)+1+len(sitename)+1:len(satname)+1+len(sitename)+1+10] + '.jpg'), dpi = 300)
+    plt.close()
+    
+# create gif
+images = []
+filenames = os.listdir(os.path.join(filepath, 'plots_classif'))
+with imageio.get_writer(sitename + '.gif', mode='I', duration=0.4) as writer:
+    for filename in filenames:
+        image = imageio.imread(os.path.join(filepath,'plots_classif',filename))
+        writer.append_data(image)
+    

make_gif_classified_sl_NARRA_Chris.py

@@ -0,0 +1,229 @@
+# -*- coding: utf-8 -*-
+
+#==========================================================#
+# Run Neural Network on image to extract sandy pixels
+#==========================================================#
+
+# Initial settings
+import os
+import numpy as np
+import matplotlib.pyplot as plt
+import matplotlib.patches as mpatches
+import matplotlib.lines as mlines
+from matplotlib import gridspec
+from datetime import datetime, timedelta
+import pytz
+import ee
+import pdb
+import time
+import pandas as pd
+# other modules
+from osgeo import gdal, ogr, osr
+import pickle
+import matplotlib.cm as cm
+from pylab import ginput
+
+# image processing modules
+import skimage.filters as filters 
+import skimage.exposure as exposure
+import skimage.transform as transform
+import sklearn.decomposition as decomposition
+import skimage.measure as measure
+import skimage.morphology as morphology
+from scipy import ndimage
+import imageio
+
+
+# machine learning modules
+from sklearn.model_selection import train_test_split
+from sklearn.neural_network import MLPClassifier
+from sklearn.preprocessing import StandardScaler, Normalizer 
+from sklearn.externals import joblib
+
+# import own modules
+import functions.utils as utils
+import functions.sds as sds
+
+# some settings
+np.seterr(all='ignore') # raise/ignore divisions by 0 and nans
+plt.rcParams['axes.grid'] = True
+plt.rcParams['figure.max_open_warning'] = 100
+ee.Initialize()
+
+# parameters
+cloud_thresh = 0.2      # threshold for cloud cover
+plot_bool = False      # if you want the plots
+prob_high = 100        # upper probability to clip and rescale pixel intensity
+min_contour_points = 100# minimum number of points contained in each water line
+output_epsg = 28356     # GDA94 / MGA Zone 56
+buffer_size = 10        # radius (in pixels) of disk for buffer (pixel classification)
+min_beach_size = 50     # number of pixels in a beach (pixel classification)
+
+# load metadata (timestamps and epsg code) for the collection
+satname = 'L8'
+sitename = 'NARRA_all'
+#sitename = 'NARRA'
+#sitename = 'OLDBAR'
+#sitename = 'OLDBAR_inlet'
+#sitename = 'SANDMOTOR'
+#sitename = 'TAIRUA'
+#sitename = 'DUCK'
+#sitename = 'BROULEE'
+
+# Load metadata
+filepath = os.path.join(os.getcwd(), 'data', satname, sitename)
+with open(os.path.join(filepath, sitename + '_timestamps' + '.pkl'), 'rb') as f:
+    timestamps = pickle.load(f)
+timestamps_sorted = sorted(timestamps)
+daysall = (datetime(2019,1,1,tzinfo=pytz.utc) - datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds()
+# path to images
+file_path_pan = os.path.join(os.getcwd(), 'data', satname, sitename, 'pan')
+file_path_ms = os.path.join(os.getcwd(), 'data', satname, sitename, 'ms')
+file_names_pan = os.listdir(file_path_pan)
+file_names_ms = os.listdir(file_path_ms)
+N = len(file_names_pan)
+
+# initialise some variables
+idx_skipped = []
+idx_nocloud = []
+n_features = 10
+train_pos = np.nan*np.ones((1,n_features))
+train_neg = np.nan*np.ones((1,n_features))
+columns = ('B','G','R','NIR','SWIR','Pan','WI','VI','BR', 'mWI', 'class')
+
+#%%
+for i in range(1):
+    i = 156 # open (96 close)
+    # read pan image
+    fn_pan = os.path.join(file_path_pan, file_names_pan[i])
+    data = gdal.Open(fn_pan, gdal.GA_ReadOnly)
+    georef = np.array(data.GetGeoTransform())
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
+    im_pan = np.stack(bands, 2)[:,:,0]
+    nrow = im_pan.shape[0]
+    ncol = im_pan.shape[1]
+    # read ms image
+    fn_ms = os.path.join(file_path_ms, file_names_ms[i])
+    data = gdal.Open(fn_ms, gdal.GA_ReadOnly)
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
+    im_ms = np.stack(bands, 2)
+    # cloud mask
+    im_qa = im_ms[:,:,5]
+    cloud_mask = sds.create_cloud_mask(im_qa, satname, plot_bool)
+    cloud_mask = transform.resize(cloud_mask, (im_pan.shape[0], im_pan.shape[1]),
+                                order=0, preserve_range=True, 
+                                mode='constant').astype('bool_')    
+    # resize the image using bilinear interpolation (order 1)
+    im_ms = transform.resize(im_ms,(im_pan.shape[0], im_pan.shape[1]),
+                             order=1, preserve_range=True, mode='constant')
+    # check if -inf or nan values and add to cloud mask
+    im_inf = np.isin(im_ms[:,:,0], -np.inf)
+    im_nan = np.isnan(im_ms[:,:,0])
+    cloud_mask = np.logical_or(np.logical_or(cloud_mask, im_inf), im_nan)
+    # skip if cloud cover is more than the threshold
+    cloud_cover = sum(sum(cloud_mask.astype(int)))/(cloud_mask.shape[0]*cloud_mask.shape[1])
+    if cloud_cover > cloud_thresh:
+        print('skip ' + str(i) + ' - cloudy (' + str(np.round(cloud_cover*100).astype(int)) + '%)')
+        idx_skipped.append(i)
+        continue
+    idx_nocloud.append(i)
+            
+    # pansharpen rgb image
+    im_ms_ps = sds.pansharpen(im_ms[:,:,[0,1,2]], im_pan, cloud_mask, plot_bool)
+    # add down-sized bands for NIR and SWIR (since pansharpening is not possible)
+    im_ms_ps = np.append(im_ms_ps, im_ms[:,:,[3,4]], axis=2) 
+    
+    im_classif, im_labels = sds.classify_image_NN(im_ms_ps, im_pan, cloud_mask, min_beach_size, plot_bool)
+        
+    # if there are no sand pixels, skip the image (maybe later change the detection method with old method)
+    if sum(sum(im_labels[:,:,0])) == 0 :
+        print('skip ' + str(i) + ' - no sand')
+        idx_skipped.append(i)
+        continue
+    
+    contours_wi, contours_mwi = sds.find_wl_contours2(im_ms_ps, im_labels, cloud_mask, buffer_size, False)
+    
+    
+    im_display = sds.rescale_image_intensity(im_ms_ps[:,:,[2,1,0]], cloud_mask, 100, False)
+    im = np.copy(im_display)
+    # define colours for plot
+    colours = np.array([[1,128/255,0/255],[0,0,204/255],[0,0,204/255]])
+    
+    for k in range(0,im_labels.shape[2]):
+        im[im_labels[:,:,k],0] = colours[k,0]
+        im[im_labels[:,:,k],1] = colours[k,1]
+        im[im_labels[:,:,k],2] = colours[k,2]
+    
+     
+#    fig = plt.figure()
+#    plt.suptitle(date_im, fontsize=17, fontweight='bold')
+#    ax1 = plt.subplot(121)
+#    plt.imshow(im_display)
+#    plt.axis('off')
+#    ax2 = plt.subplot(122, sharex=ax1, sharey=ax1)
+#    plt.imshow(im)
+#    plt.axis('off')
+#    plt.gcf().set_size_inches(17.99,7.55)
+#    plt.tight_layout() 
+#    orange_patch = mpatches.Patch(color=[1,128/255,0/255], label='sand')
+#    white_patch = mpatches.Patch(color=[204/255,1,1], label='swash/whitewater')
+#    blue_patch = mpatches.Patch(color=[0,0,204/255], label='water')
+#    plt.legend(handles=[orange_patch,white_patch,blue_patch], bbox_to_anchor=(0.95, 0.2))
+#    plt.draw()
+    
+    date_im = timestamps_sorted[i].strftime('%d %b %Y')
+    daysnow = (timestamps_sorted[i] - datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds()
+    
+    fig = plt.figure()
+    gs = gridspec.GridSpec(2, 2, height_ratios=[1, 20]) 
+
+    ax1 = fig.add_subplot(gs[0,:]) 
+    plt.plot(0,0,'ko',daysall,0,'ko')
+    plt.plot([0,daysall],[0,0],'k-')
+    plt.plot(daysnow,0,'ro')
+    plt.text(0,0.05,'2013')
+    plt.text(daysall,0.05,'2019')
+    plt.plot((datetime(2014,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2015,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2016,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2017,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.plot((datetime(2018,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0,'ko',markersize=3)
+    plt.text((datetime(2014,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2014')
+    plt.text((datetime(2015,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2015')
+    plt.text((datetime(2016,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2016')
+    plt.text((datetime(2017,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2017')
+    plt.text((datetime(2018,1,1,tzinfo=pytz.utc)- datetime(2013,1,1,tzinfo=pytz.utc)).total_seconds(),0.05,'2018')
+
+    plt.axis('off')
+
+    ax2 = fig.add_subplot(gs[1,0])
+    plt.imshow(im_display)
+    plt.axis('off')
+    plt.title(date_im, fontsize=17, fontweight='bold')
+
+    ax3 = fig.add_subplot(gs[1,1], sharex=ax2, sharey=ax2)
+    plt.imshow(im)
+    for l,contour in enumerate(contours_mwi): plt.plot(contour[:, 1], contour[:, 0], linewidth=2, color='k', linestyle='--')
+    plt.axis('off')
+    orange_patch = mpatches.Patch(color=[1,128/255,0/255], label='sand')
+    blue_patch = mpatches.Patch(color=[0,0,204/255], label='water')
+    black_line = mlines.Line2D([],[],color='k',linestyle='--', label='water line')
+    plt.legend(handles=[orange_patch,blue_patch, black_line], bbox_to_anchor=(0.6, 0.6))
+#    plt.title(date_im, fontsize=17, fontweight='bold')
+    
+    plt.gcf().set_size_inches(11.38,  7.51)
+    plt.gcf().set_tight_layout(True)
+
+    plt.draw()
+    
+#    plt.savefig(os.path.join(filepath,'plots_classif', file_names_pan[i][len(satname)+1+len(sitename)+1:len(satname)+1+len(sitename)+1+10] + '.jpg'), dpi = 300)
+#    plt.close()
+    
+# create gif
+#images = []
+#filenames = os.listdir(os.path.join(filepath, 'plots_classif'))
+#with imageio.get_writer(sitename + '.gif', mode='I', duration=0.4) as writer:
+#    for filename in filenames:
+#        image = imageio.imread(os.path.join(filepath,'plots_classif',filename))
+#        writer.append_data(image)
+    

read_images.py

@@ -84,12 +84,12 @@ for i in range(N):
     fn_pan = os.path.join(file_path_pan, file_names_pan[i])
     data = gdal.Open(fn_pan, gdal.GA_ReadOnly)
     georef = np.array(data.GetGeoTransform())
-    bands = [data.GetRasterBand(i + 1).ReadAsArray() for i in range(data.RasterCount)]
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
     im_pan = np.stack(bands, 2)[:,:,0]
     # read ms image
     fn_ms = os.path.join(file_path_ms, file_names_ms[i])
     data = gdal.Open(fn_ms, gdal.GA_ReadOnly)
-    bands = [data.GetRasterBand(i + 1).ReadAsArray() for i in range(data.RasterCount)]
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
     im_ms = np.stack(bands, 2)
     # cloud mask
     im_qa = im_ms[:,:,5]
@@ -129,7 +129,7 @@ for i in range(N):
             idx_skipped.append(i)
             continue
         else:
-#            del shorelines[idx_samedate]
+            del shorelines[idx_samedate]
             del t[idx_samedate]
             del cloud_cover_ts[idx_samedate]
             del date_acquired_ts[idx_samedate]

read_images2.py

@@ -16,6 +16,7 @@ from osgeo import gdal, ogr, osr
 import pickle
 import matplotlib.cm as cm
 from pylab import ginput
+from shapely.geometry import LineString
 
 # image processing modules
 import skimage.filters as filters 
@@ -42,12 +43,15 @@ plt.rcParams['figure.max_open_warning'] = 100
 ee.Initialize()
 
 # parameters
-cloud_thresh = 0.3      # threshold for cloud cover
+cloud_thresh = 0.2      # threshold for cloud cover
 plot_bool = False       # if you want the plots
 min_contour_points = 100# minimum number of points contained in each water line
 output_epsg = 28356     # GDA94 / MGA Zone 56
 buffer_size = 7         # radius (in pixels) of disk for buffer (pixel classification)
-min_beach_size = 50     # number of pixels in a beach (pixel classification)
+min_beach_size = 20     # number of pixels in a beach (pixel classification)
+dist_ref = 100
+min_length_wl = 300
+manual = False
 
 # load metadata (timestamps and epsg code) for the collection
 satname = 'L8'
@@ -64,6 +68,13 @@ with open(os.path.join(filepath, sitename + '_epsgcode' + '.pkl'), 'rb') as f:
     input_epsg = pickle.load(f)
 with open(os.path.join(filepath, sitename + '_refpoints' + '.pkl'), 'rb') as f:
     refpoints = pickle.load(f)
+try:
+    with open(os.path.join(filepath, sitename + '_skipped_new' + '.pkl'), 'rb') as f:
+        idx_skipped = pickle.load(f)
+except:
+    idx_skipped = []
+    manual = True
+            
 # sort timestamps and georef accuracy (dowloaded images are sorted by date in directory)
 timestamps_sorted = sorted(timestamps)
 idx_sorted = sorted(range(len(timestamps)), key=timestamps.__getitem__)
@@ -80,19 +91,20 @@ N = len(file_names_pan)
 cloud_cover_ts = []
 date_acquired_ts = []
 acc_georef_ts = []
-idx_skipped = []
-idx_nocloud = []
 t = []
 shorelines = []
-idx_keep = []
+
 #%%
 for i in range(N):
+    if ~manual:
+        if i in idx_skipped:
+            continue
         
     # read pan image
     fn_pan = os.path.join(file_path_pan, file_names_pan[i])
     data = gdal.Open(fn_pan, gdal.GA_ReadOnly)
     georef = np.array(data.GetGeoTransform())
-    bands = [data.GetRasterBand(i + 1).ReadAsArray() for i in range(data.RasterCount)]
+    bands = [data.GetRasterBand(k + 1).ReadAsArray() for k in range(data.RasterCount)]
     im_pan = np.stack(bands, 2)[:,:,0]
     nrows = im_pan.shape[0]
     ncols = im_pan.shape[1]
@@ -100,7 +112,7 @@ for i in range(N):
     # read ms image
     fn_ms = os.path.join(file_path_ms, file_names_ms[i])
     data = gdal.Open(fn_ms, gdal.GA_ReadOnly)
-    bands = [data.GetRasterBand(i + 1).ReadAsArray() for i in range(data.RasterCount)]
+    bands = [data.GetRasterBand(k + 1).ReadAsArray() for k in range(data.RasterCount)]
     im_ms = np.stack(bands, 2)
     
     # cloud mask
@@ -120,40 +132,11 @@ for i in range(N):
     
     # calculate cloud cover and skip image if too high
     cloud_cover = sum(sum(cloud_mask.astype(int)))/(cloud_mask.shape[0]*cloud_mask.shape[1])
+    if manual:
         if cloud_cover > cloud_thresh:
-        print('skip ' + str(i) + ' - cloudy (' + str(cloud_cover) + ')')
+            print('skip ' + str(i) + ' - cloudy (' + str(np.round(cloud_cover*100).astype(int)) + '%)')
             idx_skipped.append(i)
             continue
-    idx_nocloud.append(i)
-    
-    # check if image for that date already exists and choose the best in terms of cloud cover and georeferencing
-    if file_names_pan[i][len(satname)+1+len(sitename)+1:len(satname)+1+len(sitename)+1+10] in date_acquired_ts:
-        
-        # find the index of the image that is repeated
-        idx_samedate = utils.find_indices(date_acquired_ts, lambda e : e == file_names_pan[i][9:19])
-        idx_samedate = idx_samedate[0]
-        print('cloud cover ' + str(cloud_cover) + ' - ' + str(cloud_cover_ts[idx_samedate]))
-        print('acc georef ' + str(acc_georef_sorted[i]) + ' - ' + str(acc_georef_ts[idx_samedate]))
-        
-        # keep image with less cloud cover or best georeferencing accuracy
-        if cloud_cover < cloud_cover_ts[idx_samedate] - 0.01: 
-            skip = False
-        elif acc_georef_sorted[i] < acc_georef_ts[idx_samedate]:
-            skip = False
-        else:
-            skip = True
-            
-        if skip:
-            print('skip ' + str(i) + ' - repeated')
-            idx_skipped.append(i)
-            continue
-        else:
-#            del shorelines[idx_samedate]
-            del t[idx_samedate]
-            del cloud_cover_ts[idx_samedate]
-            del date_acquired_ts[idx_samedate]
-            del acc_georef_ts[idx_samedate]
-            print('keep ' + str(i) + ' - deleted ' + str(idx_samedate))
             
     # pansharpen rgb image
     im_ms_ps = sds.pansharpen(im_ms[:,:,[0,1,2]], im_pan, cloud_mask, plot_bool)
@@ -164,20 +147,119 @@ for i in range(N):
     
     # classify image in 4 classes (sand, whitewater, water, other) with NN classifier
     im_classif, im_labels = sds.classify_image_NN(im_ms_ps, im_pan, cloud_mask, min_beach_size, plot_bool)
-    idx_keep.append(i)
+
+#    # manually validate classification
+#    pt_in = np.array(ginput(n=1, timeout=1000))
+#    if pt_in[0][1] > nrows/2:
+#        print('skip ' + str(i) + ' - wrong classification')
+#        idx_skipped.append(i)
+#        continue
+    
+    # if there are no sand pixels, skip the image (maybe later change the detection method with old method)
+    if manual:
         if sum(sum(im_labels[:,:,0])) == 0 :
             print('skip ' + str(i) + ' - no sand')
             idx_skipped.append(i)
             continue
     
     # extract shorelines (new method)
-    contours_wi, contours_mwi = sds.find_wl_contours2(im_ms_ps, im_labels, cloud_mask, buffer_size, True)
+    contours_wi, contours_mwi = sds.find_wl_contours2(im_ms_ps, im_labels, cloud_mask, buffer_size, plot_bool)
     
+    plt.figure()
+    im = np.copy(im_display)
+    # define colours for plot
+    colours = np.array([[1,128/255,0/255],[204/255,1,1],[0,0,204/255]])
+    for k in range(0,im_labels.shape[2]):
+        im[im_labels[:,:,k],0] = colours[k,0]
+        im[im_labels[:,:,k],1] = colours[k,1]
+        im[im_labels[:,:,k],2] = colours[k,2]
+    plt.imshow(im)
+    for k,contour in enumerate(contours_mwi): plt.plot(contour[:, 1], contour[:, 0], linewidth=2, color='k', linestyle='--')
+    mng = plt.get_current_fig_manager()                                         
+    mng.window.showMaximized()
+    plt.tight_layout()
+    plt.draw()
+    
+    # manually validate detection
+    if manual:
+        pt_in = np.array(ginput(n=1, timeout=1000))
+        plt.close()
+        if pt_in[0][1] > nrows/2:
+            print('skip ' + str(i) + ' - wrong detection')
+            idx_skipped.append(i)
+            continue
+    else:
+        plt.close()
+    
+    # remove contour points that are around clouds (nan values)
+    for k, contour in enumerate(contours_mwi):
+        if np.any(np.isnan(contour)):
+            index_nan = np.where(np.isnan(contour))[0]
+            contour = np.delete(contour, index_nan, axis=0) 
+            
+    # convert from pixels to world coordinates
+    wl_coords = sds.convert_pix2world(contours_mwi, georef)
+    # convert to output epsg spatial reference
+    wl = sds.convert_epsg(wl_coords, input_epsg, output_epsg)
+        
+    # remove contours that have a perimeter < min_length_wl  as usually they are not shoreline
+    wl_good = []
+    for l, wls in enumerate(wl):
+        coords = [(wls[k,0], wls[k,1]) for k in range(len(wls))]
+        a = LineString(coords) # shapely LineString structure
+        if a.length >= min_length_wl:
+            wl_good.append(wls)
+    
+    # pre-process points (list of arrays to single array of points)
+    x_points = np.array([])
+    y_points = np.array([])
+    for k in range(len(wl_good)):
+        x_points = np.append(x_points,wl_good[k][:,0])
+        y_points = np.append(y_points,wl_good[k][:,1])
+    wl_good = np.transpose(np.array([x_points,y_points]))
+    
+    # only select points around Narrabeen beach (refpoints given)
+    temp = np.zeros((len(wl_good))).astype(bool)
+    for k in range(len(refpoints)): 
+        temp = np.logical_or(np.linalg.norm(wl_good - refpoints[k,[0,1]], axis=1) < dist_ref, temp) 
+    wl_final = wl_good[temp]
+    
+#    plt.figure()
+#    plt.axis('equal')
+#    plt.plot(wl_final[:,0],wl_final[:,1],'k.')
+#    plt.draw()            
+            
+    # save data
+    shorelines.append(wl_final)
     t.append(timestamps_sorted[i])
     cloud_cover_ts.append(cloud_cover)
     acc_georef_ts.append(acc_georef_sorted[i])
     date_acquired_ts.append(file_names_pan[i][9:19])
 
 
+output = {'t':t, 'shorelines':shorelines, 'cloud_cover':cloud_cover_ts, 'acc_georef':acc_georef_ts}
+
+
+#with open(os.path.join(filepath, sitename + '_output_new' + '.pkl'), 'wb') as f:
+#    pickle.dump(output, f)
+#    
+#with open(os.path.join(filepath, sitename + '_skipped_new' + '.pkl'), 'wb') as f:
+#    pickle.dump(idx_skipped, f)
+    
+#    plt.figure()
+#    plt.axis('equal')
+#    plt.plot(refpoints[:,0], refpoints[:,1], 'ko')
+#    plt.plot(all_points[temp,0], all_points[temp,1], 'go')
+#    plt.plot(all_points[~temp,0], all_points[~temp,1], 'ro')
+#    plt.draw()
+    
+    # extract shorelines (old method)
+#    im_ndwi = sds.nd_index(im_ms_ps[:,:,3], im_ms_ps[:,:,1], cloud_mask, plot_bool)
+#    wl_pix = sds.find_wl_contours(im_ndwi, cloud_mask, min_contour_points, plot_bool)
 
+#    plt.figure()
+#    plt.imshow(im_display)
+#    for k,contour in enumerate(contours_mwi): plt.plot(contour[:, 1], contour[:, 0], linewidth=3, color='k')
+#    for k,contour in enumerate(wl_pix): plt.plot(contour[:, 1], contour[:, 0], linestyle='--', linewidth=1, color='w')
+#    plt.draw()
     

read_images_old.py

@@ -0,0 +1,284 @@
+# -*- coding: utf-8 -*-
+
+#==========================================================#
+# Extract shorelines from Landsat images
+#==========================================================#
+
+# Initial settings
+import os
+import numpy as np
+import matplotlib.pyplot as plt
+import ee
+import pdb
+
+# other modules
+from osgeo import gdal, ogr, osr
+import pickle
+import matplotlib.cm as cm
+from pylab import ginput
+from shapely.geometry import LineString
+
+# image processing modules
+import skimage.filters as filters 
+import skimage.exposure as exposure
+import skimage.transform as transform
+import sklearn.decomposition as decomposition
+import skimage.measure as measure
+import skimage.morphology as morphology
+
+# machine learning modules
+from sklearn.model_selection import train_test_split
+from sklearn.neural_network import MLPClassifier
+from sklearn.preprocessing import StandardScaler, Normalizer 
+from sklearn.externals import joblib
+
+# import own modules
+import functions.utils as utils
+import functions.sds as sds
+
+# some settings
+np.seterr(all='ignore') # raise/ignore divisions by 0 and nans
+plt.rcParams['axes.grid'] = True
+plt.rcParams['figure.max_open_warning'] = 100
+ee.Initialize()
+
+# parameters
+cloud_thresh = 0.5      # threshold for cloud cover
+plot_bool = False      # if you want the plots
+min_contour_points = 100# minimum number of points contained in each water line
+output_epsg = 28356     # GDA94 / MGA Zone 56
+buffer_size = 7        # radius (in pixels) of disk for buffer (pixel classification)
+min_beach_size = 20     # number of pixels in a beach (pixel classification)
+dist_ref = 100
+min_length_wl = 300
+
+# load metadata (timestamps and epsg code) for the collection
+satname = 'L8'
+sitename = 'NARRA'
+#sitename = 'OLDBAR'
+
+# Load metadata
+filepath = os.path.join(os.getcwd(), 'data', satname, sitename)
+with open(os.path.join(filepath, sitename + '_timestamps' + '.pkl'), 'rb') as f:
+    timestamps = pickle.load(f)
+with open(os.path.join(filepath, sitename + '_accuracy_georef' + '.pkl'), 'rb') as f:
+    acc_georef = pickle.load(f) 
+with open(os.path.join(filepath, sitename + '_epsgcode' + '.pkl'), 'rb') as f:
+    input_epsg = pickle.load(f)
+with open(os.path.join(filepath, sitename + '_refpoints2' + '.pkl'), 'rb') as f:
+    refpoints = pickle.load(f)
+# sort timestamps and georef accuracy (dowloaded images are sorted by date in directory)
+timestamps_sorted = sorted(timestamps)
+idx_sorted = sorted(range(len(timestamps)), key=timestamps.__getitem__)
+acc_georef_sorted = [acc_georef[j] for j in idx_sorted]
+
+# path to images
+file_path_pan = os.path.join(os.getcwd(), 'data', satname, sitename, 'pan')
+file_path_ms = os.path.join(os.getcwd(), 'data', satname, sitename, 'ms')
+file_names_pan = os.listdir(file_path_pan)
+file_names_ms = os.listdir(file_path_ms)
+N = len(file_names_pan)
+
+# initialise some variables
+cloud_cover_ts = []
+date_acquired_ts = []
+acc_georef_ts = []
+idx_skipped = []
+idx_nocloud = []
+t = []
+shorelines = []
+
+#%%
+for i in range(N):
+    
+    # read pan image
+    fn_pan = os.path.join(file_path_pan, file_names_pan[i])
+    data = gdal.Open(fn_pan, gdal.GA_ReadOnly)
+    georef = np.array(data.GetGeoTransform())
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
+    im_pan = np.stack(bands, 2)[:,:,0]
+    nrows = im_pan.shape[0]
+    ncols = im_pan.shape[1]
+    
+    # read ms image
+    fn_ms = os.path.join(file_path_ms, file_names_ms[i])
+    data = gdal.Open(fn_ms, gdal.GA_ReadOnly)
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
+    im_ms = np.stack(bands, 2)
+    
+    # cloud mask
+    im_qa = im_ms[:,:,5]
+    cloud_mask = sds.create_cloud_mask(im_qa, satname, plot_bool)
+    cloud_mask = transform.resize(cloud_mask, (im_pan.shape[0], im_pan.shape[1]),
+                                order=0, preserve_range=True, 
+                                mode='constant').astype('bool_')    
+    # resize the image using bilinear interpolation (order 1)
+    im_ms = transform.resize(im_ms,(im_pan.shape[0], im_pan.shape[1]),
+                             order=1, preserve_range=True, mode='constant')
+    
+    # check if -inf or nan values and add to cloud mask
+    im_inf = np.isin(im_ms[:,:,0], -np.inf)
+    im_nan = np.isnan(im_ms[:,:,0])
+    cloud_mask = np.logical_or(np.logical_or(cloud_mask, im_inf), im_nan)
+    
+    # calculate cloud cover and skip image if too high
+    cloud_cover = sum(sum(cloud_mask.astype(int)))/(cloud_mask.shape[0]*cloud_mask.shape[1])
+    if cloud_cover > cloud_thresh:
+        print('skip ' + str(i) + ' - cloudy (' + str(np.round(cloud_cover*100).astype(int)) + '%)')
+        idx_skipped.append(i)
+        continue
+    idx_nocloud.append(i)
+            
+    # pansharpen rgb image
+    im_ms_ps = sds.pansharpen(im_ms[:,:,[0,1,2]], im_pan, cloud_mask, plot_bool)
+    # rescale pansharpened RGB for visualisation
+    im_display = sds.rescale_image_intensity(im_ms_ps[:,:,[2,1,0]], cloud_mask, 100, False)
+    # add down-sized bands for NIR and SWIR (since pansharpening is not possible)
+    im_ms_ps = np.append(im_ms_ps, im_ms[:,:,[3,4]], axis=2) 
+    
+    # classify image in 4 classes (sand, whitewater, water, other) with NN classifier
+    im_classif, im_labels = sds.classify_image_NN(im_ms_ps, im_pan, cloud_mask, min_beach_size, plot_bool)
+
+#    # manually validate classification
+#    pt_in = np.array(ginput(n=1, timeout=1000))
+#    if pt_in[0][1] > nrows/2:
+#        print('skip ' + str(i) + ' - wrong classification')
+#        idx_skipped.append(i)
+#        continue
+    
+    # if there are no sand pixels, skip the image (maybe later change the detection method with old method)
+    if sum(sum(im_labels[:,:,0])) == 0 :
+        print('skip ' + str(i) + ' - no sand')
+        idx_skipped.append(i)
+        continue
+    
+    # extract shorelines (new method)
+    contours_wi, contours_mwi = sds.find_wl_contours2(im_ms_ps, im_labels, cloud_mask, buffer_size, plot_bool)
+    
+    plt.figure()
+    im = np.copy(im_display)
+    # define colours for plot
+    colours = np.array([[1,128/255,0/255],[204/255,1,1],[0,0,204/255]])
+    for k in range(0,im_labels.shape[2]):
+        im[im_labels[:,:,k],0] = colours[k,0]
+        im[im_labels[:,:,k],1] = colours[k,1]
+        im[im_labels[:,:,k],2] = colours[k,2]
+    plt.imshow(im)
+    for k,contour in enumerate(contours_mwi): plt.plot(contour[:, 1], contour[:, 0], linewidth=2, color='k', linestyle='--')
+    mng = plt.get_current_fig_manager()                                         
+    mng.window.showMaximized()
+    plt.tight_layout()
+    plt.draw()
+
+    
+    # manually validate detection
+    pt_in = np.array(ginput(n=1, timeout=1000))
+    if pt_in[0][1] > nrows/2:
+        print('skip ' + str(i) + ' - wrong detection')
+        idx_skipped.append(i)
+        continue
+    
+    # remove contour points that are around clouds (nan values)
+    for k, contour in enumerate(contours_mwi):
+        if np.any(np.isnan(contour)):
+            index_nan = np.where(np.isnan(contour))[0]
+            contour = np.delete(contour, index_nan, axis=0) 
+            
+    # convert from pixels to world coordinates
+    wl_coords = sds.convert_pix2world(contours_mwi, georef)
+    # convert to output epsg spatial reference
+    wl = sds.convert_epsg(wl_coords, input_epsg, output_epsg)
+        
+    # remove contours that have a perimeter < min_length_wl  as usually they are not shoreline
+    wl_good = []
+    for l, wls in enumerate(wl):
+        coords = [(wls[k,0], wls[k,1]) for k in range(len(wls))]
+        a = LineString(coords) # shapely LineString structure
+        if a.length >= min_length_wl:
+            wl_good.append(wls)
+    
+    # pre-process points (list of arrays to single array of points)
+    x_points = np.array([])
+    y_points = np.array([])
+    for k in range(len(wl_good)):
+        x_points = np.append(x_points,wl_good[k][:,0])
+        y_points = np.append(y_points,wl_good[k][:,1])
+    wl_good = np.transpose(np.array([x_points,y_points]))
+    
+    # only select points around Narrabeen beach (refpoints given)
+    temp = np.zeros((len(wl_good))).astype(bool)
+    for k in range(len(refpoints)): 
+        temp = np.logical_or(np.linalg.norm(wl_good - refpoints[k,[0,1]], axis=1) < dist_ref, temp) 
+    wl_final = wl_good[temp]
+    
+    plt.figure()
+    plt.axis('equal')
+    plt.plot(wl_final[:,0],wl_final[:,1],'k.')
+    plt.draw()
+      
+    
+    # check if image for that date already exists and choose the best in terms of cloud cover and georeferencing
+    if file_names_pan[i][len(satname)+1+len(sitename)+1:len(satname)+1+len(sitename)+1+10] in date_acquired_ts:
+        
+        # find the index of the image that is repeated
+        idx_samedate = utils.find_indices(date_acquired_ts, lambda e : e == file_names_pan[i][9:19])
+        idx_samedate = idx_samedate[0]
+#        print('cloud cover ' + str(cloud_cover) + ' - ' + str(cloud_cover_ts[idx_samedate]))
+#        print('acc georef ' + str(acc_georef_sorted[i]) + ' - ' + str(acc_georef_ts[idx_samedate]))
+        
+        # keep image with less cloud cover or best georeferencing accuracy
+        if cloud_cover < cloud_cover_ts[idx_samedate] - 0.01: 
+            skip = False
+        elif acc_georef_sorted[i] < acc_georef_ts[idx_samedate]:
+            skip = False
+        else:
+            skip = True
+            
+        if skip:
+            print('skip ' + str(i) + ' - repeated')
+            idx_skipped.append(i)
+            continue
+        else:
+            del shorelines[idx_samedate]
+            del t[idx_samedate]
+            del cloud_cover_ts[idx_samedate]
+            del date_acquired_ts[idx_samedate]
+            del acc_georef_ts[idx_samedate]
+            print('keep ' + str(i) + ' - deleted ' + str(idx_samedate))
+            
+            
+    # save data
+    shorelines.append(wl_final)
+    t.append(timestamps_sorted[i])
+    cloud_cover_ts.append(cloud_cover)
+    acc_georef_ts.append(acc_georef_sorted[i])
+    date_acquired_ts.append(file_names_pan[i][9:19])
+    
+output = {'t':t, 'shorelines':shorelines, 'cloud_cover':cloud_cover_ts, 'acc_georef':acc_georef_ts}
+
+#with open(os.path.join(filepath, sitename + '_output2' + '.pkl'), 'wb') as f:
+#    pickle.dump(output, f)
+#    
+#with open(os.path.join(filepath, sitename + '_skipped2' + '.pkl'), 'wb') as f:
+#    pickle.dump(idx_skipped, f)
+#
+#with open(os.path.join(filepath, sitename + '_idxnocloud2' + '.pkl'), 'wb') as f:
+#    pickle.dump(idx_nocloud, f) 
+    
+#    plt.figure()
+#    plt.axis('equal')
+#    plt.plot(refpoints[:,0], refpoints[:,1], 'ko')
+#    plt.plot(all_points[temp,0], all_points[temp,1], 'go')
+#    plt.plot(all_points[~temp,0], all_points[~temp,1], 'ro')
+#    plt.draw()
+    
+    # extract shorelines (old method)
+#    im_ndwi = sds.nd_index(im_ms_ps[:,:,3], im_ms_ps[:,:,1], cloud_mask, plot_bool)
+#    wl_pix = sds.find_wl_contours(im_ndwi, cloud_mask, min_contour_points, plot_bool)
+
+#    plt.figure()
+#    plt.imshow(im_display)
+#    for i,contour in enumerate(contours_mwi): plt.plot(contour[:, 1], contour[:, 0], linewidth=3, color='k')
+#    for i,contour in enumerate(wl_pix): plt.plot(contour[:, 1], contour[:, 0], linestyle='--', linewidth=1, color='w')
+#    plt.draw()
+    

sand_pixtrain_beach.py

@@ -88,14 +88,14 @@ for i in range(N):
     fn_pan = os.path.join(file_path_pan, file_names_pan[i])
     data = gdal.Open(fn_pan, gdal.GA_ReadOnly)
     georef = np.array(data.GetGeoTransform())
-    bands = [data.GetRasterBand(i + 1).ReadAsArray() for i in range(data.RasterCount)]
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
     im_pan = np.stack(bands, 2)[:,:,0]
     nrow = im_pan.shape[0]
     ncol = im_pan.shape[1]
     # read ms image
     fn_ms = os.path.join(file_path_ms, file_names_ms[i])
     data = gdal.Open(fn_ms, gdal.GA_ReadOnly)
-    bands = [data.GetRasterBand(i + 1).ReadAsArray() for i in range(data.RasterCount)]
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
     im_ms = np.stack(bands, 2)
     # cloud mask
     im_qa = im_ms[:,:,5]

sand_runNN.py

@@ -85,14 +85,14 @@ for i in range(N):
     fn_pan = os.path.join(file_path_pan, file_names_pan[i])
     data = gdal.Open(fn_pan, gdal.GA_ReadOnly)
     georef = np.array(data.GetGeoTransform())
-    bands = [data.GetRasterBand(i + 1).ReadAsArray() for i in range(data.RasterCount)]
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
     im_pan = np.stack(bands, 2)[:,:,0]
     nrow = im_pan.shape[0]
     ncol = im_pan.shape[1]
     # read ms image
     fn_ms = os.path.join(file_path_ms, file_names_ms[i])
     data = gdal.Open(fn_ms, gdal.GA_ReadOnly)
-    bands = [data.GetRasterBand(i + 1).ReadAsArray() for i in range(data.RasterCount)]
+    bands = [data.GetRasterBand(i + 1).ReadAsArray() for k in range(data.RasterCount)]
     im_ms = np.stack(bands, 2)
     # cloud mask
     im_qa = im_ms[:,:,5]

sl_comparison_NARRA.py

@@ -0,0 +1,382 @@
+# -*- coding: utf-8 -*-
+
+#==========================================================#
+# Compare Narrabeen SDS with 3D quadbike surveys
+#==========================================================#
+
+# Initial settings
+
+import os
+import numpy as np
+import matplotlib.pyplot as plt
+import pdb
+import ee
+
+import matplotlib.dates as mdates
+import matplotlib.cm as cm
+from datetime import datetime, timedelta
+import pickle
+import pytz
+import scipy.io as sio
+import scipy.interpolate as interpolate
+import statsmodels.api as sm
+import skimage.measure as measure
+
+# my functions
+import functions.utils as utils
+
+# some settings
+np.seterr(all='ignore') # raise/ignore divisions by 0 and nans
+plt.rcParams['axes.grid'] = True
+plt.rcParams['figure.max_open_warning'] = 100
+
+au_tz = pytz.timezone('Australia/Sydney')
+
+# load quadbike dates and convert from datenum to datetime
+filename = 'data\quadbike\survey_dates.mat'
+filepath = os.path.join(os.getcwd(), filename)
+dates_quad = sio.loadmat(filepath)['dates'] # matrix containing year, month, day
+dates_quad = [datetime(dates_quad[i,0], dates_quad[i,1], dates_quad[i,2],
+                       tzinfo=au_tz) for i in range(dates_quad.shape[0])]
+
+# load timestamps from satellite images
+satname = 'L8'
+sitename = 'NARRA'
+filepath = os.path.join(os.getcwd(), 'data', satname, sitename)
+with open(os.path.join(filepath, sitename + '_output_new' + '.pkl'), 'rb') as f:
+    output = pickle.load(f)
+        
+dates_l8 = output['t']
+# convert to AEST
+dates_l8 = [_.astimezone(au_tz) for _ in dates_l8]
+# remove duplicates
+dates_l8_str = [_.strftime('%Y%m%d') for _ in dates_l8]
+dupl = utils.duplicates_dict(dates_l8_str)
+idx_remove = []
+for k,v in dupl.items():
+    
+    idx1 = v[0]
+    idx2 = v[1]
+    
+    c1 = output['cloud_cover'][idx1]
+    c2 = output['cloud_cover'][idx2]
+    g1 = output['acc_georef'][idx1]
+    g2 = output['acc_georef'][idx2]
+    
+    if c1 < c2 - 0.01:
+        idx_remove.append(idx2)
+    elif g1 < g2 - 0.1:
+        idx_remove.append(idx2)
+    else:
+        idx_remove.append(idx1)
+idx_remove = sorted(idx_remove)
+idx_all = np.linspace(0,70,71)
+idx_keep = list(np.where(~np.isin(idx_all,idx_remove))[0])
+output['t'] = [output['t'][k] for k in idx_keep]
+output['shorelines'] = [output['shorelines'][k] for k in idx_keep]
+output['cloud_cover'] = [output['cloud_cover'][k] for k in idx_keep]
+output['acc_georef'] = [output['acc_georef'][k] for k in idx_keep]
+# convert to AEST
+dates_l8 = output['t']
+dates_l8 = [_.astimezone(au_tz) for _ in dates_l8]
+
+# load wave data (already AEST)
+filename = 'data\wave\SydneyProcessed.mat'
+filepath = os.path.join(os.getcwd(), filename)
+wave_data = sio.loadmat(filepath)
+idx = utils.find_indices(wave_data['dates'][:,0], lambda e: e >= dates_l8[0].year and e <= dates_l8[-1].year)
+hsig = np.array([wave_data['Hsig'][i][0] for i in idx])
+wdir = np.array([wave_data['Wdir'][i][0] for i in idx])
+dates_wave = [datetime(wave_data['dates'][i,0], wave_data['dates'][i,1],
+                       wave_data['dates'][i,2], wave_data['dates'][i,3],
+                       wave_data['dates'][i,4], wave_data['dates'][i,5],
+                       tzinfo=au_tz) for i in idx]
+    
+# load tide data (already AEST)
+filename = 'SydTideData.mat'
+filepath = os.path.join(os.getcwd(), 'data', 'tide', filename)
+tide_data = sio.loadmat(filepath)
+idx = utils.find_indices(tide_data['dates'][:,0], lambda e: e >= dates_l8[0].year and e <= dates_l8[-1].year)
+tide = np.array([tide_data['tide'][i][0] for i in idx])
+dates_tide = [datetime(tide_data['dates'][i,0], tide_data['dates'][i,1],
+                       tide_data['dates'][i,2], tide_data['dates'][i,3],
+                       tide_data['dates'][i,4], tide_data['dates'][i,5],
+                       tzinfo=au_tz) for i in idx]
+
+#%% make a plot of all the dates with wave data
+orange = [255/255,140/255,0]
+blue = [0,191/255,255/255]
+f = plt.figure()
+months = mdates.MonthLocator()
+month_fmt = mdates.DateFormatter('%b %Y')
+days = mdates.DayLocator()
+years = [2013,2014,2015,2016]
+for k in range(len(years)):
+    sel_year = years[k]
+    ax = plt.subplot(4,1,k+1)
+    idx_year = utils.find_indices(dates_wave, lambda e : e.year >= sel_year and e.year <= sel_year)
+    plt.plot([dates_wave[i] for i in idx_year], [hsig[i] for i in idx_year], 'k-', linewidth=0.5)
+    hsigmax = np.nanmax([hsig[i] for i in idx_year])
+    cbool = True
+    for j in range(len(dates_quad)):
+        if dates_quad[j].year == sel_year:
+            if cbool:
+                plt.plot([dates_quad[j], dates_quad[j]], [0, hsigmax], color=orange, label='survey')
+                cbool = False
+            else:
+                plt.plot([dates_quad[j], dates_quad[j]], [0, hsigmax], color=orange)
+    cbool = True
+    for j in range(len(dates_l8)):
+        if dates_l8[j].year == sel_year:
+            if cbool:
+                plt.plot([dates_l8[j], dates_l8[j]], [0, hsigmax], color=blue, label='landsat8')
+                cbool = False
+            else:
+                plt.plot([dates_l8[j], dates_l8[j]], [0, hsigmax], color=blue)
+    if k == 3:
+        plt.legend()
+    plt.xlim((datetime(sel_year,1,1), datetime(sel_year,12,31, tzinfo=au_tz)))
+    plt.ylim((0, hsigmax))
+    plt.ylabel('Hs [m]')
+    ax.xaxis.set_major_locator = months
+    ax.xaxis.set_major_formatter(month_fmt)
+f.subplots_adjust(hspace=0.2)
+plt.draw()
+
+#%% calculate difference between dates (quad and sat)
+diff_days = [ [(x - _).days for _ in dates_quad] for x in dates_l8]
+max_diff = 14
+idx_closest = [utils.find_indices(_, lambda e: abs(e) <= max_diff) for _ in diff_days]
+# store in dates_diff dictionnary
+dates_diff = []
+cloud_cover = []
+for i in range(len(idx_closest)):
+    if not idx_closest[i]:
+        continue
+    elif len(idx_closest[i]) > 1:
+        idx_best = np.argmin(np.abs([diff_days[i][_] for _ in idx_closest[i]]))
+        dates_temp = [dates_quad[_] for _ in idx_closest[i]]
+        days_temp = [diff_days[i][_] for _ in idx_closest[i]]
+        dates_diff.append({"date sat": dates_l8[i],
+                           "date quad": dates_temp[idx_best],
+                           "days diff": days_temp[idx_best]})
+    else:
+        dates_diff.append({"date sat": dates_l8[i],
+                           "date quad": dates_quad[idx_closest[i][0]],
+                           "days diff": diff_days[i][idx_closest[i][0]]
+                           }) 
+    # store cloud data
+    cloud_cover.append(output['cloud_cover'][i])
+
+# store wave data
+wave_hsig = []
+for i in range(len(dates_diff)):
+    wave_hsig.append(hsig[np.argmin(np.abs(np.array([(dates_diff[i]['date sat'] - _).total_seconds() for _ in dates_wave])))])
+
+# make a plot
+plt.figure()
+counter = 0
+for i in range(len(dates_diff)):
+    counter = counter + 1
+    if dates_diff[i]['date quad'] > dates_diff[i]['date sat']:
+        date_min = dates_diff[i]['date sat']
+        date_max = dates_diff[i]['date quad']
+        color1 = orange
+        color2 = blue
+    else:
+        date_min = dates_diff[i]['date quad']
+        date_max = dates_diff[i]['date sat']
+        color1 = blue
+        color2 = orange
+    idx_t = utils.find_indices(dates_wave, lambda e : e >= date_min and e <= date_max)
+    hsigmax = np.nanmax([hsig[i] for i in idx_t])
+    hsigmin = np.nanmin([hsig[i] for i in idx_t])
+    if counter > 9:
+        counter = 1
+        plt.figure()
+    ax = plt.subplot(3,3,counter)
+    plt.plot([dates_wave[i] for i in idx_t], [hsig[i] for i in idx_t], 'k-', linewidth=1.5)
+    plt.plot([date_min, date_min], [0, 4.5], color=color2, label='survey')
+    plt.plot([date_max, date_max], [0, 4.5], color=color1, label='landsat8')
+    plt.ylabel('Hs [m]')
+    ax.xaxis.set_major_locator(mdates.DayLocator(tz=au_tz))
+    ax.xaxis.set_minor_locator(mdates.HourLocator(tz=au_tz))
+    ax.xaxis.set_major_formatter(mdates.DateFormatter('%d'))
+    ax.xaxis.set_minor_locator(months)
+    plt.title(dates_diff[i]['date sat'].strftime('%b %Y') + '   (' + str(abs(dates_diff[i]['days diff'])) + ' days)')
+    plt.draw()
+    plt.gcf().subplots_adjust(hspace=0.5)   
+
+# mean day difference
+np.mean([ np.abs(_['days diff']) for _ in dates_diff])
+
+#%% Compare shorelines in elevation
+
+dist_buffer = 50 # buffer of points selected for interpolation
+
+# load quadbike .mat files 
+foldername = 'data\quadbike\surveys3D'
+folderpath = os.path.join(os.getcwd(), foldername)
+filenames = os.listdir(folderpath)
+
+# get the satellite shorelines
+sl = output['shorelines']
+
+# get dates from filenames
+dates_quad = [datetime(int(_[6:10]), int(_[11:13]), int(_[14:16]), tzinfo= au_tz) for _ in filenames]
+
+zav = []
+ztide = []
+sl_gt = []
+for i in range(len(dates_diff)):
+    
+    sl_smooth = sl[i]
+    
+    # select closest 3D survey and load .mat file
+    idx_closest = np.argmin(np.abs(np.array([(dates_diff[i]['date sat'] - _).days for _ in dates_quad])))
+    survey3d = sio.loadmat(os.path.join(folderpath, filenames[idx_closest]))
+    # reshape to a vector
+    xs = survey3d['x'].reshape(survey3d['x'].shape[0] * survey3d['x'].shape[1])
+    ys = survey3d['y'].reshape(survey3d['y'].shape[0] * survey3d['y'].shape[1])
+    zs = survey3d['z'].reshape(survey3d['z'].shape[0] * survey3d['z'].shape[1])
+    # remove nan values
+    idx_nan = np.isnan(zs)
+    xs = xs[~idx_nan]
+    ys = ys[~idx_nan]
+    zs = zs[~idx_nan]
+    
+    # find water level at the time the image was acquired
+    idx_closest = np.argmin(np.abs(np.array([(dates_diff[i]['date sat'] - _).total_seconds() for _ in dates_tide])))
+    tide_level = tide[idx_closest]
+    ztide.append(tide_level)
+    
+    # find contour corresponding to the water level on 3D surface (if below minimum, add 0.05m increments)
+    if tide_level < np.nanmin(survey3d['z']):
+        tide_level = np.nanmin(survey3d['z'])
+        sl_tide = measure.find_contours(survey3d['z'], tide_level)
+        sl_tide = sl_tide[np.argmax(np.array([len(_) for _ in sl_tide]))]
+        count = 0
+        while len(sl_tide) < 900:
+            count = count + 1
+            tide_level = tide_level + 0.05*count
+            sl_tide = measure.find_contours(survey3d['z'], tide_level)
+            sl_tide = sl_tide[np.argmax(np.array([len(_) for _ in sl_tide]))]
+        print('added ' + str(0.05*count) + ' cm   -  contour with ' + str(len(sl_tide)) + ' points')    
+    else:
+        sl_tide = measure.find_contours(survey3d['z'], tide_level)
+        sl_tide = sl_tide[np.argmax(np.array([len(_) for _ in sl_tide]))]
+    # remove nans
+    if np.any(np.isnan(sl_tide)):
+        index_nan = np.where(np.isnan(sl_tide))[0]
+        sl_tide = np.delete(sl_tide, index_nan, axis=0) 
+    # get x,y coordinates
+    xtide = [survey3d['x'][int(np.round(sl_tide[m,0])), int(np.round(sl_tide[m,1]))] for m in range(sl_tide.shape[0])]
+    ytide = [survey3d['y'][int(np.round(sl_tide[m,0])), int(np.round(sl_tide[m,1]))] for m in range(sl_tide.shape[0])]
+    sl_gt.append(np.transpose(np.array([np.array(xtide), np.array(ytide)])))
+    # interpolate SDS on 3D surface to get elevation (point by point)
+    zq = []
+    for j in range(sl_smooth.shape[0]):
+        xq = sl_smooth[j,0]
+        yq = sl_smooth[j,1]
+        dist_q = np.linalg.norm(np.transpose(np.array([[xq - _ for _ in xs],[yq - _ for _ in ys]])), axis=1)
+        idx_buffer = dist_q <= dist_buffer
+        if sum(idx_buffer) > 0:
+            tck = interpolate.bisplrep(xs[idx_buffer], ys[idx_buffer], zs[idx_buffer])
+            zq.append(interpolate.bisplev(xq, yq, tck))
+            
+    zq = np.array(zq)
+    plt.figure()
+    plt.hist(zq, bins=100)
+    plt.draw()
+#        plt.figure()
+#        plt.axis('equal')
+#        plt.scatter(xs, ys, s=10, c=zs, marker='o', cmap=cm.get_cmap('jet'),
+#                    label='quad data')
+#        plt.plot(xs[idx_buffer], ys[idx_buffer], 'ko')
+#        plt.plot(xq,yq,'ro')
+#        plt.draw()
+        
+    # store the alongshore median elevation
+    zav.append(np.median(utils.reject_outliers(zq, m=2)))
+    
+    # make plot
+    red = [255/255, 0, 0]
+    gray = [0.75, 0.75, 0.75]
+    plt.figure()
+    plt.subplot(121)
+    plt.axis('equal')
+    plt.scatter(xs, ys, s=10, c=zs, marker='o', cmap=cm.get_cmap('jet'),
+            label='3D survey')
+    plt.plot(xtide, ytide, '--', color=gray, linewidth=2.5, label='tide level contour')
+    plt.plot(sl_smooth[:,0], sl_smooth[:,1], '-', color=red, linewidth=2.5, label='SDS')
+#    plt.plot(sl[i][idx_beach,0], sl[i][idx_beach,1], 'w-', linewidth=2)
+    plt.xlabel('Eastings [m]')
+    plt.ylabel('Northings [m]')
+    plt.title('Shoreline comparison')
+    plt.colorbar(label='mAHD')
+    plt.legend()
+    plt.ylim((6266100, 6267000))
+    plt.subplot(122)
+    plt.plot(np.linspace(0,1,len(zq)), zq, 'ko-', markersize=5)
+    plt.plot([0, 1], [zav[i], zav[i]], 'r-', label='median')
+    plt.plot([0, 1], [ztide[i], ztide[i]], 'g--', label = 'measured tide')
+    plt.xlabel('Northings [m]')
+    plt.ylabel('Elevation [mAHD]')
+    plt.title('Alongshore SDS elevation')
+    plt.legend()
+    mng = plt.get_current_fig_manager()                                         
+    mng.window.showMaximized()
+    plt.tight_layout()   
+    plt.draw()
+    
+    print(i)
+
+#%% Calculate some error statistics
+zav = np.array(zav)
+ztide = np.array(ztide)
+
+f = plt.figure()
+plt.subplot(3,1,1)
+plt.bar(np.linspace(1,len(zav),len(zav)), zav-ztide)
+plt.ylabel('Error in z [m]')
+plt.title('Elevation error')
+plt.xticks([])
+plt.draw()
+
+plt.subplot(3,1,2)
+plt.bar(np.linspace(1,len(zav),len(zav)), wave_hsig, color=orange)
+plt.ylabel('Hsig [m]')
+plt.xticks([])
+plt.draw()
+
+plt.subplot(3,1,3)
+plt.bar(np.linspace(1,len(zav),len(zav)), np.array(cloud_cover)*100, color='g')
+plt.ylabel('Cloud cover %')
+plt.xlabel('comparison #')
+plt.grid(False)
+plt.grid(axis='y')
+f.subplots_adjust(hspace=0)
+plt.draw()
+
+np.sqrt(np.mean((zav - ztide)**2))
+
+
+
+#%% plot to show LOWESS smoothing
+#i = 0
+#idx_beach = [np.min(np.linalg.norm(sl[i][k,:] - narrabeach, axis=1)) < dist_thresh for k in range(sl[i].shape[0])]
+#x = sl[i][idx_beach,0]
+#y = sl[i][idx_beach,1]
+#sl_smooth = lowess(x,y, frac=1./10, it = 10)
+#
+#plt.figure()
+#plt.axis('equal')
+#plt.scatter
+#plt.plot(x,y,'bo', linewidth=2, label='original SDS')
+#plt.plot(sl_smooth[:,1], sl_smooth[:,0], 'ro', linewidth=2, label='smoothed SDS')
+#plt.legend()
+#plt.xlabel('Eastings [m]')
+#plt.ylabel('Northings [m]')
+#plt.title('Local weighted scatterplot smoothing (LOWESS)')
+#plt.draw()
+

sl_comparison_NARRA_old.py

@@ -24,7 +24,7 @@ import skimage.measure as measure
 
 # my functions
 import functions.utils as utils
-import functions.sds as sds
+import functions.sds_old1 as sds
 
 # some settings
 np.seterr(all='ignore') # raise/ignore divisions by 0 and nans
@@ -44,7 +44,7 @@ dates_quad = [datetime(dates_quad[i,0], dates_quad[i,1], dates_quad[i,2],
 satname = 'L8'
 sitename = 'NARRA'
 filepath = os.path.join(os.getcwd(), 'data', satname, sitename)
-with open(os.path.join(filepath, sitename + '_output2' + '.pkl'), 'rb') as f:
+with open(os.path.join(filepath, sitename + '_output' + '.pkl'), 'rb') as f:
     output = pickle.load(f)
 dates_l8 = output['t']
 # convert to AEST
@@ -195,7 +195,7 @@ filenames = os.listdir(folderpath)
 sl = output['shorelines']
 
 # load narrabeen beach points (manually digitized)
-with open(os.path.join(os.getcwd(), 'olddata', 'narra_beach' + '.pkl'), 'rb') as f:
+with open(os.path.join(os.getcwd(), 'old', 'olddata', 'narra_beach' + '.pkl'), 'rb') as f:
     narrabeach = pickle.load(f)
 
 # get dates from filenames