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tricontourf(x, y, z)#
Draw contour regions on an unstructured triangular grid.
Seetricontourf.
importmatplotlib.pyplotaspltimportnumpyasnpplt.style.use('_mpl-gallery-nogrid')# make data:np.random.seed(1)x=np.random.uniform(-3,3,256)y=np.random.uniform(-3,3,256)z=(1-x/2+x**5+y**3)*np.exp(-x**2-y**2)levels=np.linspace(z.min(),z.max(),7)# plot:fig,ax=plt.subplots()ax.plot(x,y,'o',markersize=2,color='grey')ax.tricontourf(x,y,z,levels=levels)ax.set(xlim=(-3,3),ylim=(-3,3))plt.show()