When representing "polarized" data for which zero and sign are meaningful (like for instance, a gravity anomalies map), it is useful to have a colormap where white stands for zero value, and greater magnitudes are plotted as colors with increasing saturation.
This little function POLARMAP has two different usages:
- proposes a new red-white-blue colormap that is standard for this purpose (same usage as other Matlab colormaps);
- applies a zero-center white shading to any existing colormap, like JET or HSV, or user defined.
Type "doc polarmap" for complete help, syntax and examples.
François Beauducel (2022). POLARMAP: Polarized colormap (https://www.mathworks.com/matlabcentral/fileexchange/37099-polarmap-polarized-colormap), MATLAB Central File Exchange. Retrieved .
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