Follow this demo. The colorbar ranges approximately from -6 to 8 and the transition between Winter and Summer colormaps happens at 2.
Key variables
- h - handle to the surface object
- transitionValue - the color value where the transition should happen
- n - the total number of values in the combined colormap (the more the better).
- ax - the axis handle.
[X,Y,Z] = peaks(25);
h = surf(X,Y,Z);
axis square
colorbar
% set transition value
transitionValue = 2;
n = 256; % number of colormap value
ax = gca();
% change colormap. Use winter below transition value
% and summer above transition value.
clim = [min(h.CData(:)), max(h.CData(:))]; % range of color values
np = round(abs(clim - transitionValue) / range(clim) * n); %number of color values from each colormap
cmap = [winter(np(1)); summer(np(2))];
ax.Colormap = cmap;
ax.CLim = clim;
