Addition of examples in the harris and peak local max function

doc/examples/plot_harris.py

@@ -19,14 +19,11 @@ from skimage.feature import harris
 def plot_harris_points(image, filtered_coords):
     """ plots corners found in image"""
 
-    plt.plot()
     plt.imshow(image)
-    plt.plot([p[1] for p in filtered_coords],
-             [p[0] for p in filtered_coords],
-             'b.')
+    y, x = np.transpose(filtered_coords)
+    plt.plot(x, y, 'b.')
     plt.axis('off')
-    plt.show()
-
+ 
 # display results
 plt.figure(figsize=(9, 3))
 im_lena = img_as_float(data.lena())
@@ -41,3 +38,5 @@ filtered_coords = harris(im_text, min_distance=4)
 
 plt.axes([0.2, 0, 0.77, 1])
 plot_harris_points(im_text, filtered_coords)
+
+plt.show()