improc ass4: Added samples plot.

improc/ass4/report/report.tex

@@ -26,11 +26,11 @@ The partial derivatives $f_x, f_y, f_{xx}, f_{xy}$ and $f_{yy}$ can be derived a
 \begin{table}[H]
 	\begin{tabular}{rl}
 		$f_x$    & $= A \frac{\delta}{\delta x} sin(Vx) + B \frac{\delta}{\delta x} cos(Wy)$ \\
-	    	     & $= A cos(Vx) \times V + B \times 0$ \\
+	    	     & $= A cos(Vx) \cdot V + B \cdot 0$ \\
 	    	     & $= AV cos(Vx)$ \\
 	    	     & \\
 		$f_y$    & $= A \frac{\delta}{\delta y} sin(Vx) + B \frac{\delta}{\delta y} cos(Wy)$ \\
-	    	     & $= A \times 0 - B sin(Wy) \times W$ \\
+	    	     & $= A \cdot 0 - B sin(Wy) \cdot W$ \\
 	    	     & $= -BW sin(Wy)$ \\
 	    	     & \\
 		$f_{xx}$ & $= AV \frac{\delta}{\delta x} cos(Vx)$ \\

improc/ass4/samples.py

@@ -26,11 +26,12 @@ 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
-subplot(131)
-imshow(F, cmap='gray', extent=(-100, 100) * 2)
+extent = (-100, 100) * 2
+subplot(221)
+imshow(F, cmap='gray', extent=extent)
 quiver(yy, xx, FFy, -FFx, color='red')
-subplot(132)
-imshow(Fx, cmap='gray')
-subplot(133)
-imshow(Fy, cmap='gray')
+subplot(222)
+imshow(Fx, cmap='gray', extent=extent)
+subplot(223)
+imshow(Fy, cmap='gray', extent=extent)
 show()