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Re: Vector legend with PARTVELVEC [message #84231 is a reply to message #84223]

Fri, 03 May 2013 10:25

wlandsman
Messages: 743
Registered: June 2000

Senior Member

Perhaps I misunderstand, but if you just want to draw a single arrow for a legend, I would use cgArrow.pro (or arrow.pro), rather than partvelvec.

--Wayne

On Friday, May 3, 2013 12:43:11 PM UTC-4, Fabien wrote:
> Hey IDLers,
>
>
>
> Maybe I haven't been searching hard enough but I did not find a way to
>
> use PARTVELVEC to draw only one vector as a legend vector. I guess I
>
> could do this myself by making my own partvelvec routine, but I thought
>
> this would be something the community might already have done.
>
>
>
> It is not that trivial since partvelvec draws in DATA coordinates, while
>
> the legend vector should be plotted outside the image. And the length of
>
> the legend should correspond to that of the plot of course ;-). I think
>
> this can only be done by modifying partvelvec so that it returns
>
> "something" that can be used to plot a legend afterwards. Like:
>
>
>
> cgImage, myImage
>
> partvelvec, vx, vy, px, py, /OVER, LEGEND_struc=legend ;output
>
> partvelvec_legend, legend, POSITION=poslegend, etc.
>
>
>
> Anyways, if someone did this already and is willing to share I would be
>
> very thankful. If not, I'm open to suggestions on how to do this the
>
> right way ;)
>
>
>
> Cheers,
>
>
>
> Fab

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[Message index]

		Re: Vector legend with PARTVELVEC By: Fabzi on Sun, 05 May 2013 04:25
		Re: Vector legend with PARTVELVEC By: Sir Loin Steak on Sat, 04 May 2013 15:26
		Re: Vector legend with PARTVELVEC By: wlandsman on Fri, 03 May 2013 10:25

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