How to create a custom colormap ("seismic" from python)

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I have read the colormap helpdocs but I am in need of a bit of help. I am not so familiar with RGB codes for colors, but I am trying to create a colormap like the one attached. It goes from red to white in the middle and then from white to blue towards the bottom end. How can I achieve something like this?
This specific colormap is called "seismic" in python.

Accepted Answer

KSSV
KSSV on 21 Mar 2023

More Answers (1)

MJFcoNaN
MJFcoNaN on 21 Mar 2023
Hello,
The easiest way may be creating manually in "colormap editor" and then you can save it.
  1. Right-click the colorbar and select "colormap editor" (I'm not sure the exact English translate).
  2. You can add/delete/change those key-colors, and Matlab will do the interpolation.
  3. You may choose the default "jet" colormap as a template. then delete some unwanted key-colors and add a white key-color in the middle.

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