issue of making a contour plot by matplotlib

Asked Aug 10 '18 at 13:38

Active Aug 10 '18 at 13:38

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I have an 11 x 11 data array and try to make a contour plot.

fig3=plt.figure(3)
contour_qe=plt.contourf(x_sqr,y_sqr,p_sqr,cmap=cm.coolwarm,shading='flat')

fig3.colorbar(contour_qe,shrink=0.5,aspect=5)
plt.show()

the x_sqr, y_sqr and z_sqr are 11x11 array. The figure I got is like following:

There are many empty spaces in the figure... What I like to get is like:

The triangle mesh is not essential. square mesh also OK.

How can I generate that? I tried both "pcolormesh， contourf" , not work either.

asked Aug 10 '18 at 13:38

rfeynman

1

Of course the data is unknown so one cannot say anything about the result you obtain, but intuitively one would use `plt.tricontourf` or `plt.tripcolor` when the data does not lie on a rectilinear grid. – ImportanceOfBeingErnest Aug 10 '18 at 13:58
using tricontourf is works. Thanks! – rfeynman Aug 10 '18 at 15:43

issue of making a contour plot by matplotlib

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