freezeColors.mをダウンロードしてきて使う
http://blogs.mathworks.com/pick/2009/07/24/using-multiple-colormaps-in-a-single-figure/
http://jp.mathworks.com/matlabcentral/fileexchange/7943-freezecolors---unfreezecolors
figure('color','w') subplot(1,2,1) image(X); colormap(map); % Here's John's contribution: freezeColors subplot(1,2,2) contour(P,15) colormap(copper) axis ij square pcolor(P) axis ij square shading flat