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Function Grapher and Visual Calculus have the ability of creating color map. Color map uses colors to indicate data values of the third dimension.
The following figure is a color map of function x=u, y=v, z=sin(u)*sin(v). Color red indicates the maximum value of z, and color blue indicates the minimum value of z.
Related Topics
Contour plot
Vector plot
Math Software -> Graph Function (Graph Calculus) -> Color Map
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