I have an issue with the colormap for my plots. The data I'm plotting ranges
between 0 and 24 but I am trying to have the colormap display values from 0
to 30. What happens is that the colormap reads the min and max values in my
data and uses those disregarding the vmin and vmax set.
Here is a snippet of code to show how I'm using the colormap:
m.contourf(X,Y, zi, cmap = cmap, norm = norm)
Another question is how can you setup the levels displyed in the colormap.
In my previous example they are st at 0,3,6,9,12,...24. How can I make them
every 2 values or every 1 value?
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