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Color ranging from blue, green, and red using fill

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Hey everybody,
Does anyone know how to plot colors ranging from blue (-1) - green (0) - red (+1)? I'm currently only able to blot completely blue or red using the fill function with 'r' or 'b'.

Answers (2)

Walter Roberson
Walter Roberson on 22 Dec 2015
fill() creates a patch so it is limited to what a patch can do. For that see
Note that to do the interpolated coloring for faces you need multiple faces, whereas fill() only creates one face. You will be wanting to create a triangular mesh or quad mesh to color more closely.
Or you could create an image of the colors you want and apply the image as a texture map over a surface object created with surf(). You might want to use this File Exchange contribution

Image Analyst
Image Analyst on 22 Dec 2015
Not sure what you want, but see if either of the two attached demos does it.

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