Groups > comp.soft-sys.math.mathematica > #2920

ContourPlot ColorFunction Question

From	Jody Sorensen <jodo11@yahoo.com>
Newsgroups	comp.soft-sys.math.mathematica
Subject	ContourPlot ColorFunction Question
Date	2011-06-03 08:36 +0000
Organization	Steven M. Christensen and Associates, Inc and MathTensor, Inc.
Message-ID	<isa6f0$ae7$1@smc.vnet.net> (permalink)

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I'm new to this list and possibly out of my depth, but I'd appreciate any help on this issue. 

We are trying to plot an implicit function using ContourPlot and have the points on the curve colored based on the x and y values (which we call c and x) - specifically based on the value of the derivative. 

We have tried things like the following without success, even though similar commands work with Plot: 
ContourPlot[x^2+c = x, {c, -2, 2}, {x, -2, 2},
 ColorFunction -> (If[2 #1 > 1, Red, Green] &)]

Any suggestions or solutions would be great to hear!

Thanks!
Jody Sorensen

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ContourPlot ColorFunction Question Jody Sorensen <jodo11@yahoo.com> - 2011-06-03 08:36 +0000

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