improc ass4: Merged Fx and Fy plots.

improc/ass4/samples.py

@@ -27,11 +27,9 @@ FFy = -B * W ** 2 * cos(W * YY)
 # Plot F, Fx and Fy sample data next to each other
 # Show FFx and FFy as a quiver plot over F
 extent = (-100, 100) * 2
-subplot(221)
+subplot(121, title='First derivatives')
+imshow(Fy * Fx, cmap='gray', extent=extent)
+subplot(122, title='Second derivatives')
 imshow(F, cmap='gray', extent=extent)
 quiver(yy, xx, FFy, -FFx, color='red')
-subplot(222)
-imshow(Fx, cmap='gray', extent=extent)
-subplot(223)
-imshow(Fy, cmap='gray', extent=extent)
 show()