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2D-Plot Colorings


Re Mathematica 5.1.

In plotting y = x^2 over [-1,1], I want to color red those points whose y-values are in [0.2, 0.4].  All others are blue.

Although I can do this by manipulating the FullGraphics object or by displaying separate plots, is there an easier way via some Plot option?  ColorFunction doesn't seem to work (probably user error), and neither does the Plot3D convention in which shading is co-declared with the function.

Thankx.

Bruce


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