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Re: legend not working with symcat [message #68531 is a reply to message #68528] Wed, 04 November 2009 11:28 Go to previous messageGo to previous message
wlandsman is currently offline  wlandsman
Messages: 743
Registered: June 2000
Senior Member
On Nov 4, 9:21 am, maurya <ramaury...@gmail.com> wrote:
> I changed the "legend.pro" as you have suggested. Now, it is working
> for n<=10 only. For larger values of n>10 it is giving following
> error:
>
> PLOTS: PSYM (plotting symbol) out of range

I suspect that it works for n>10 but is failing for n=10. That is
because the IDL definition of PSYM=10 (which SYMCAT() follows) does
not really define a symbol, but tells IDL to plot in histogram mode.
It *cannot* be used with PLOTS, e.g.

IDL> plot,indgen(10),indgen(10)
IDL> plots,5,5,psym=symcat(10)
% PLOTS: PSYM (plotting symbol) out of range

So it is probably best to not use PSYM=10. (What symbol should one
use in a legend to distinguish a line draw in histogram mode, versus
one connecting the points?)

--Wayne

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