POLARMAP: Polarized colormap

Colormap with zero-center white shading.
Updated 13 Jun 2012

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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.

Cite As

François Beauducel (2024). POLARMAP: Polarized colormap (https://www.mathworks.com/matlabcentral/fileexchange/37099-polarmap-polarized-colormap), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2012a
Compatible with any release
Platform Compatibility
Windows macOS Linux

Inspired: MatPlotLib Perceptually Uniform Colormaps

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Version Published Release Notes

Reverse default colors (blue-white-red) which is more logical...