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Re: turn a string value into variable name [message #94472 is a reply to message #94471]

Fri, 02 June 2017 02:59

Markus Schmassmann
Messages: 129
Registered: April 2016

Senior Member

On 06/02/2017 12:48 AM, laura.hike@gmail.com wrote:
> So now I want to do this in order to use a loop to add lines to a plot and then make a legend. I need the plot names to all be different so I can use them in the "target" argument, but I can otherwise make the plot commands identical, e.g.,
>
> p1 = plot(xbin, pdf, color = linecolors[nsea], thick = 2, name = seanames[nsea], /overplot)
>
> Based on David's comment, I tried
>
> execute('p5 = plot(xbin, pdf, color = linecolors[nsea-1], thick = 2, name = seanames[nsea-1], /overplot)')
>
> but this didn't do anything except return a "1". I'm really not excited about putting in a plot command (with an 'if' statement' for each of the lines I want to overplot.

I don't see why you'd use an EXECUTE here, try the code below

pp=objarr(n_lines)
for nsea=0,n_lines-1 do if <condition> then pp[nsea]=plot( xbin, pdf, $
color = linecolors[nsea-1], thick = 2, name = seanames[nsea-1], $
/overplot )
l=legend(target=pp)

If this doesn't help, please explain in more detail what you want to do,
it's now fully clear from your post.

Good Luck, Markus

PS: The main topic of this thread is mostly obsolete as of IDL 8.0 with
the introduction of HASH

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[Message index]

		turn a string value into variable name By: Nick[2] on Thu, 23 October 2008 15:30
		Re: turn a string value into variable name By: David Fanning on Wed, 29 October 2008 08:09
		Re: turn a string value into variable name By: loebasboy on Wed, 29 October 2008 08:29
		Re: turn a string value into variable name By: laura.hike on Thu, 01 June 2017 15:48
		Re: turn a string value into variable name By: Markus Schmassmann on Fri, 02 June 2017 02:59
		Re: turn a string value into variable name By: loebasboy on Wed, 29 October 2008 07:55
		Re: turn a string value into variable name By: David Fanning on Wed, 29 October 2008 06:34
		Re: turn a string value into variable name By: Vince Hradil on Wed, 29 October 2008 08:30

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