I am drawing several contour plots in one page. I use "image", and get several contours. But I don't know how to control the color in more than one plots. For example, same color corresponds to different dependent values in different plots. For example, "yellow" means z=100(the highest value) in plot1, but "yellow" means z=40(the highest value) in plot2--this is not what I want. In fact,I want the same color corresponds the same depedent value in each plot. Say, in all plots, "yellow" means z=100,"red" means z=40, etc. I was wondering if someone can tell me which function I can use. Because it seems to me that "image" function doesn't have such option to control that. Thank you.
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