Re: Plot without a graph
- To: mathgroup at smc.vnet.net
- Subject: [mg84456] Re: Plot without a graph
- From: David Bailey <dave at Remove_Thisdbailey.co.uk>
- Date: Tue, 25 Dec 2007 06:28:38 -0500 (EST)
- References: <fkangm$dev$1@smc.vnet.net>
jackgold at umich.edu wrote:
> Hello,
>
> Suppose I want the table of values that Mathematica uses to plot the
> graph but I don't want the graph plotted. I knew how to do it once, a
> long time ago, but I have forgotten the scheme. Something like
> Display->Identity?
>
> Sorry to trouble you guys with this trivia but I could not find the
> method by searching the options for plot. By the way, I do know how to
> get the table!
>
You are thinking of DisplayFunction->Identity, which had the effect of
just returning the Graphics expression but not actually drawing the
plot. This has changed somewhat at 6.0, and in an case did not do what I
think you want to do - i.e. return a table of {x,y} pairs.
The following example shows how to achieve this:
Reap[Plot[Sin[x], {x, 0, 10},
EvaluationMonitor :> Sow[{x, Sin[x]}]]][[2]]
David Bailey
http://www.dbaileyconsultancy.co.uk