How to set two attributes for the norm parameter in a pcolormesh?

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1

When using pcolormesh, I need to set the color range, so I use
norm=[mcolors.BoundaryNorm(np.arange(-0.3,0.6+0.1,0.1), ncolors=plt.cm.RdBu_r.N, extend='both')] .
However I aslo want to set norm = mcolors.TwoSlopeNorm(vcenter=0) . How can I set these two attributes in pcolormesh at the same time?

2

I do not fully understand the question. ScalarMappable objects have exactly 1 norm both conceptually and at the code level.

What are you trying to do that you want to set two norms?