Arg. It's always the last thing you try:

quadmesh.set_clim(vmin=0, vmax=15)

works.

Answer from mgilson on Stack Overflow
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GeeksforGeeks
geeksforgeeks.org โ€บ matplotlib-pyplot-clim-in-python
Matplotlib.pyplot.clim() in Python - GeeksforGeeks
April 19, 2020 - Below examples illustrate the ... as np from matplotlib.colors import LogNorm dx, dy = 0.015, 0.05 y, x = np.mgrid[slice(-4, 4 + dy, dy), slice(-4, 4 + dx, dx)] z = (1 - x / 3....
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W3cubDocs
docs.w3cub.com โ€บ matplotlib โ€บ _as_gen โ€บ matplotlib.pyplot.clim
pyplot.clim - Matplotlib - W3cubDocs
If you want to set the clim of multiple images, use set_clim on every image, for example: ... ยฉ 2012โ€“2023 Matplotlib Development Team. All rights reserved. Licensed under the Matplotlib License Agreement.