Build Custom Colormaps with Variable Resolutions

Build custom colormaps

This function can be used to build your own custom colormaps.
the first input argument colors is a n X 3 matrix with each row
specifying the color.
the second argument is the resolution of the colormap default(300)
Example:
colors_mat = [1 0 1; 0 1 0];
[cmap]=buildcolormap(colors_mat,255);
% % try the output cmap:
im=imread('cameraman.tif');
imshow(im), colorbar
colormap(cmap) %will use the output colormap

Author: Vengatesan G
Thanks to M Sohrabinia for his original work.
http://www.mathworks.com/matlabcentral/fileexchange/40318-build-custom-colormaps