Centered Colormap

by Matteo Courthoud

function file: centered.m

example file: example.m

This package provides colormaps centered on the white color corresponding to zero. Just specify centeredas an argument to a colormap to use the default centered colormap.

surf(peaks(25)+2);
colormap(centered), colorbar

Even if the scale is asymmetric (positive), the palette has the color white centered on zero.

The function takes different color palettes as arguments.

For example, we can use the BrBg palette.

contourf(peaks(25)-2,25,'linestyle','none'); 
colormap(centered('BrBg')), colorbar;

Again, even if the scale is asymmetric (negative), the palette has the color white centered on zero.