I am running the exact example give in this SVM example of Scikit learn without any modification.
I get the following warning.
<ipython-input-49-ba88740f796f>:14: UserWarning: No contour levels were found within the data range. ax.contour(XX, YY, Z, colors='k', levels=[-1, 0, 1], alpha=0.5,
Could anyone suggest how to resolve this? TIA