| Re: using LOCATIONS keyword of IDLgrText? [message #52391] |
Sat, 03 February 2007 11:07 |
badjelly.witch
Messages: 27
Registered: May 2006
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Junior Member |
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On Feb 3, 5:20 am, Laurens <mr....@inter.nl.net> wrote:
> I found a way to make it work, though I don't know if its
> efficient or nice to do;
>
> had to give a reform command to the positions keyword:
>
> , POSITIONS=reform(posArr,3,i)
>
> I'm open to suggestions for nicer solutions though this works
> fine for me...
That looks nice enough to me, but if to avoid flattening the array
when you extend it you can add a couple more brackets:
posArray = [[posArray],[newPos]]
By the way, extending an array repeatedly like this gets *very*
inefficient when the array is large, because you're actually creating
a whole new array every time. But for your application this shouldn't
be a problem.
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| Re: using LOCATIONS keyword of IDLgrText? [message #52398 is a reply to message #52391] |
Fri, 02 February 2007 08:20  |
Laurens
Messages: 41
Registered: May 2006
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Member |
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I found a way to make it work, though I don't know if its efficient or
nice to do;
had to give a reform command to the positions keyword:
, POSITIONS=reform(posArr,3,i)
I'm open to suggestions for nices solutions though this works fine for me...
Laurens
Laurens wrote:
> Hi, once again,
>
> I'm starting to feel sorry for myself for not being able to find what I
> want to know; I kinda kn�w that the solution should be somewhere in the
> groups and somehow I think it could be constructed by all the
> J.D.-Smith-bracket-fun on David's site, but I can't make anything out of
> it (call me stupid lol).
>
> Problem: I'm having an IDLgrText-object. I need multiple texts displayed
> on a curve, so I already have an array of strings for that (keyword
> STRINGS). I'm also creating an array for the positions for each string:
>
> newPos = [x,y,z]
> IF (n_elements(posArray) EQ 0) THEN $
> posArray = [newPos] $
> ELSE $
> posArray = [posArray,[newPos]]
>
> IDLgrText->SetProperty, POSITIONS=posArray
>
> Somehow though, that doesn't work; the first text is displayed correctly
> but the next ones go to 0,0,0 which tells me that IDL doesn't like the
> positions somehow.
>
> Is my expansion of the Array faulty or does the POSITIONS keyword just
> not work :-) (one can always hope its not his own fault, right :P)
>
> I'm thankful once again :-)
>
>
> Cheers, Laurens
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