I am using the following code to contour plot some data using contourf
in matplotlib
. I have set the transparency of the colourbar to 0.6, but there are annoying lines between each colour interval that I cant get rid of. There doesnt seem to be a way to set linestyle
in contourf
, any ideas?
#instantiating and titiling the figure fig, ax1 = plt.subplots(figsize=(7,5)) fig.suptitle('Testing Simple Neural Networks', y=0.96, fontsize=16, fontweight='bold'); #defining colour tables cm = plt.cm.coolwarm #plotting the contour plot levels = np.linspace(0, 1, 25) cont1 = ax1.contourf(p1_mesh, p2_mesh, y_mesh, levels=levels, cmap=cm, alpha=0.6, linewidths=10) #plotting the entire dataset - training and test data. scat1 = ax1.scatter(X['p1'], X['p2'], c=y, cmap=cm, edgecolors='k'); #setting axis and legend ax1.set(ylabel='p2', xlabel='p1', xlim=(0,255), ylim=(0,255)); ax1.legend(*scat1.legend_elements(), title='Target'); ax1.set_axisbelow(True) ax1.grid(color='xkcd:light grey') cbar = fig.colorbar(cont1)
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Answer
You can add the option antialiased=True
to ax1.contourf
, it should fix it.