| Re: Why is the content of my object graphics window being wiped? [message #84860 is a reply to message #84840] |
Fri, 14 June 2013 11:13   |
Mark Piper
Messages: 198
Registered: December 2009
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Senior Member |
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On Wednesday, June 12, 2013 4:35:01 PM UTC-6, Paul van Delst wrote:
> On 06/12/13 16:13, David Fanning wrote:
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>> Paul van Delst writes:
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>>
>
>>> I'm having a similar problem, but with Function graphics.
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>>>
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>>> I've gotten an nVidia driver installed (which apparently doesn't play
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>>> nice with RHEL6). Could that be the cause of the problem?
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>>>
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>>> How does one set the FG equivalent of RETAIN=2?
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>>
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>> Really!? Can you show me an example of what you mean? I wouldn't have
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>> though FG needed any retaining. I would have thought this was all being
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>> handled via expose events. RETAIN is just going to get you into all
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>> kinds of trouble.
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>
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> Sure. Take a look at:
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> http://ftp.emc.ncep.noaa.gov/jcsda/CRTM/.plots/Screenshot.pn g
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>
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>> I'd be very curious to see what the problem looks like and what commands
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>> produce it.
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>
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> I think the offender is
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> q = get_kbrd(1)
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> but that's not an issue for DG window refresh/retain and I can't recall
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> it being an issue for FG in the past either. I pause to peruse and
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> compare FG plots all the time.
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>
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> As far as I can remember (it did take an entire month to get IDL
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> reinstalled on my "upgraded" computer) this is new behaviour. Whether
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> it's caused by IDL v8.2.2 or by the use of the nVidia driver in RHEL6 --
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> or some unholy combination of the two -- I'm trying to figure out.
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>
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> cheers,
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>
>
> paulv
Hi Paul,
When called from the command line, NG are widget programs. So, on UNIX-based systems, if you're stopped inside a routine, the NG window won't get the expose event until you .continue the interpreter. There's a related issue when using NG in the Workbench which we're looking at repairing in IDL 8.3. We may also look at this for NG called from the command line.
I would like to get this fixed because it's key to be able to visually explore data with IDL.
mp
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