first try at histograms

compress_start.py

@@ -67,9 +67,12 @@ if __name__ == '__main__':
             elif s[-6] == '3':
                 tiff3.append(os.path.join(scene, s))
     
+    cameras = [tiff0, tiff1, tiff2, tiff3]
     diff = []
-    for ii in range(len(tiff1)):
-        image = Image.open(tiff1[ii])    #Open the image and read it as an Image object
+    i = 0
+    for cam in cameras:
+        for ii in range(len(cam)):
+            image = Image.open(cam[ii])    #Open the image and read it as an Image object
             image = np.array(image)[1:,:]    #Convert to an array, leaving out the first row because the first row is just housekeeping data
             ar1, ar2 = image.shape
            
@@ -83,7 +86,11 @@ if __name__ == '__main__':
                 else:
                     surrounding.append(image[ind1+i, ind1+j])               #Add the other 8 pixels to the list
             diff.append(np.max(surrounding)-np.min(surrounding))
-        
+        plt.subplot(2,2,i+1)
+        plt.hist(diff)
+        i += 1
+    plt.tight_layout()
+    plt.show()