| Re: Poscript Component Selection [message #45519 is a reply to message #45518] |
Mon, 12 September 2005 17:34   |
Mark Hadfield
Messages: 783
Registered: May 1995
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Senior Member |
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David Fanning wrote:
> IDLmastertobe writes:
>> partial code:
>> sState.oVols[sState.iVrendVol]->SetProperty, $
>> HIDE=1-vol_rend
>> demo_draw, sState.oWindow, sState.oView, debug=sState.debug
>> sState.oVols[sState.iVrendVol]->SetProperty,HIDE=1
>> oImage = sState.oWindow->Read()
>> oImage->GetProperty,DATA=data
>> OBJ_DESTROY,oImage
>
> By the way, do you think we could have a peek at that
> DEMO_DRAW module? That's probably where you are going
> to have to solve this problem, although I have doubts
> that it *can* be solved, given the names of some of the
> variables in this code.
The above looks suspiciously like an excerpt from
<IDL_DIR>\examples\demo\demosrc\d_vectrack.pro
line 439-445 (in version 6.2). The original poster appears to be trying
to adapt some IDL demo code for his own purposes. Now this *sounds* like
a sensible thing to do but (as many of the newsgroup regulars can
attest) the code distributed with IDL is a whole Pandora's box of worms.
I imagine that if I spent 15 minutes or so I could fight my way into the
code, find the view object and draw it to a PS file in vector form. The
results, in terms of code, wouldn't be pretty. The results, in terms of
Postscript, may not be very pretty either, as the scene displayed by
d_vectrack is a 3D one using effects like shading that will not be
reproduced properly.
So, IDL mastertobe, before your or any of the rest of us put the effort
in, perhaps you could tell us more about what you're really trying to
do. Is this a learning exercise (in which case you might find a totally
different approach more fruitful)? Are you are trying to plot the
thunderstorm visualization displayed by d_vectrack, or have you changed
that too? Do you want a quick and dirty solution or something more
general and adaptable?
--
Mark Hadfield "Kei puwaha te tai nei, Hoea tahi tatou"
m.hadfield@niwa.co.nz
National Institute for Water and Atmospheric Research (NIWA)
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