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POLARMAP: Polarized colormap

version 1.1 (2.67 KB) by

Colormap with zero-center white shading.



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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.

Comments and Ratings (4)



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

MATLAB Release
MATLAB 7.14 (R2012a)

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