fix plotting of MPs #7

VotingAnalysis.py

@@ -180,8 +180,8 @@ X = data[:,1:]
 print(X)
 
 inp = X.shape[1]   # No of features (bill count)
-h = 150            # Grid height
-w = 150            # Grid width
+h = 10            # Grid height
+w = 10           # Grid width
 rad = 2            # Neighbour radius
 ep = 300           # No of epochs
 
@@ -199,23 +199,28 @@ sofmnet = algorithms.SOFM(
 sofmnet.train(X, epochs=ep)
 
 #Visualizing Output
-fig,ax = plt.subplots()
+plt.figure()
 
 weight = sofmnet.weight.reshape((sofmnet.n_inputs, h, w))
 heatmap = compute_heatmap(weight, h, w)
 plt.imshow(heatmap, cmap='Greys_r', interpolation='nearest')
-#plt.axis('off')
+plt.axis('off')
 plt.colorbar()
+plt.show()
 
+fig,ax = plt.subplots()
 prediction = sofmnet.predict(X)
 print(f'prediction: {prediction}')
 # converting to x and y coordinates
-# TODO: verify that actually correct
-xs = np.argmax(np.argmax(prediction.reshape(X.shape[0], h, w), axis=1), axis=1)
-ys = np.argmax(np.argmax(prediction.reshape(X.shape[0], h, w), axis=2), axis=1)
+ys, xs = np.unravel_index(np.argmax(X, axis=1), (h, w))
+
+# add random offset to show points that are in the same location
+ys_disp = ys + np.random.rand(ys.shape[0])
+xs_disp = xs + np.random.rand(xs.shape[0])
+
 
 # TODO: fix color
-plot_mps(fig, ax, xs, ys, data[:,0], np.random.rand(X.shape[0]))
+plot_mps(fig, ax, ys_disp, xs_disp, data[:,0], np.random.rand(X.shape[0]))
 plt.show()
 
 #Simple SOFM for UK