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Coloring curves: not as simple as it sounds..

  • To: mathgroup at smc.vnet.net
  • Subject: [mg118143] Coloring curves: not as simple as it sounds..
  • From: Jean-Michel Di Nicola <jeanmichel.dinicola at gmail.com>
  • Date: Thu, 14 Apr 2011 04:49:21 -0400 (EDT)

All,

I have a question that looks fairly trivial, but I cannot solve it....
Please help!

Thanks, JM

Here is a simplified toy example.
When I type
Plot[{a x /. {a -> 1}, a x^2 /. {a -> 1}, a x^3 /. {a -> 1}}, {x, 0,
  2}, PlotStyle -> {Red, Green, Blue}]
I get 3 curves with different colors.

Well, when I type
Plot[{a x, a x^2, a x^3} /. {a -> 1}, {x, 0, 2},
 PlotStyle -> {Red, Green, Blue}]
I get 3 curves but they are all blue, WHY?

However, when I evaluate {a x /. {a -> 1}, a x^2 /. {a -> 1}, a x^3 /.
{a -> 1} and {a x, a x^2, a x^3} /. {a -> 1}, they both give the same
result....{x, x^2, x^3}.

Thank you for your help!!!


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