color-coding a 2D plot
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I am wondering how we can plot a 2D figure,x vs. y, which the amplitude of a given mathematical function, let say f(x,y) where e.g. f=sqrt(x.^2+y.^2), is encoded with colors in 2D plot as if max(f) is shown with e.g. blue color and min(f) with red color.
thank you so much, --V
unfortunately shading interp doesn't seem to work on contourf so here's an inelegant solution to your problem.
[x,y] = meshgrid(-10:0.1:10,-10:0.1:10); % just to get some x and y values
z = sqrt(x.^2 + y.^2);
set(gca,'cameraposition',[0 0 180]) % this essentially turns a 3d surface plot into a 2d plot