Nicer support vectors in example plot_separating_hyperplane.py

Idea taken from svm_gui.py

examples/svm/plot_separating_hyperplane.py

@@ -40,8 +40,10 @@ pl.set_cmap(pl.cm.Paired)
 pl.plot(xx, yy, 'k-')
 pl.plot(xx, yy_down, 'k--')
 pl.plot(xx, yy_up, 'k--')
+
+pl.scatter(clf.support_vectors_[:,0], clf.support_vectors_[:,1], 
+           s=80, facecolors='none')
 pl.scatter(X[:,0], X[:,1], c=Y)
-pl.scatter(clf.support_vectors_[:,0], clf.support_vectors_[:,1], c='white')
 
 pl.axis('tight')
 pl.show()