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Re: Plot question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg80920] Re: [mg80840] Plot question
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Wed, 5 Sep 2007 03:00:45 -0400 (EDT)
  • Reply-to: hanlonr at cox.net

Because Plot has the Attribute HoldAll. Use Evaluate.

Attributes[Plot]

{HoldAll,Protected}

Plot[Evaluate[{a x, 2 a x, 3 a x} /. a -> 2], {x, 1, 2}, 
 PlotStyle -> {Red, Green, Blue}]


Bob Hanlon

---- Yaroslav Bulatov <yaroslavvb at gmail.com> wrote: 
> Why does the plot below make all 3 curves the same color?
> 
> Plot[{a x, 2 a x, 3 a x} /. a -> 2, {x, 1, 2},
>  PlotStyle -> {Red, Green, Blue}]
> 
> 



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