Gallery/tutorial example showing how to use different colormaps for subplots

[maxrjones]

Description of the desired feature

I think it would be worthwhile to add @seisman's example from the forum (https://forum.generic-mapping-tools.org/t/different-colorbars-for-subplots/1797/8) or something similar as either a gallery example or part of a tutorial, showing how to use set_panel to apply different colormaps to subplots. This is probably a common use-case case for PyGMT, but not obvious without an example.

[michaelgrund]

Fully agree, having an example on this will avoid a lot of confusion, especially for non-experienced GMT users.

[core-man]

I will help with this issue but might need some time to finish it so I self-assign it to me if you wouldn't mind. I might prefer a gallery example.

[maxrjones]

I will help with this issue but might need some time to finish it so I self-assign it to me if you wouldn't mind. I might prefer a gallery example.

Great, thanks @core-man!