| Re: idl 6.3 bus error during tv [message #57832] |
Thu, 03 January 2008 18:42  |
Michael Galloy
Messages: 1114
Registered: April 2006
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Senior Member |
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On Jan 3, 6:32 pm, don.woodra...@gmail.com wrote:
> Thank you for collecting this information in a nice easy-to-read
> format, but unfortunately, this does not fix my problem. The PLOT
> command works. XYOUTS works, too. I can create windows with no
> problems. It's only the TV procedures that cause a bus error that
> rudely dumps me back to my unix shell.
So widget programs work for you? Not just starting a widget app, but
interacting with it? This was my problem when I upgraded to Leopard
with IDL 6.4. Upgrading to IDL 6.4.1 (or IDL 7.0) fixed it.
> I may be wrong here, but I think that if the DISPLAY variable was not
> correct, then I wouldn't be able to create any windows in IDL at all
> (but I can). Perhaps I'm mistaken about this.
With Leopard, you can supposedly not set the DISPLAY variable and
everything will be OK. With the updates at http://trac.macosforge.org/projects/xquartz,
things are working for me. I'm not sure you're going to get IDL 6.3
working with Leopard, but you'll want the X11 updates in any case.
Mike
--
www.michaelgalloy.com
Tech-X Corporation
Software Developer II
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| Re: idl 6.3 bus error during tv [message #57833 is a reply to message #57832] |
Thu, 03 January 2008 17:32  |
don.woodraska
Messages: 13
Registered: October 2005
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Junior Member |
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On Jan 3, 11:30 am, David Fanning <da...@dfanning.com> wrote:
>
> Here is where you should start with sorting this well-known problem
> out:
>
> http://www.dfanning.com/tips/maccrash.html
>
> Cheers,
>
> David
Thank you for collecting this information in a nice easy-to-read
format, but unfortunately, this does not fix my problem. The PLOT
command works. XYOUTS works, too. I can create windows with no
problems. It's only the TV procedures that cause a bus error that
rudely dumps me back to my unix shell.
I may be wrong here, but I think that if the DISPLAY variable was not
correct, then I wouldn't be able to create any windows in IDL at all
(but I can). Perhaps I'm mistaken about this.
This problem seems to be isolated to TV and TVSCL commands only. Below
is a snippet from another session that shows the !D structure, a
successful plot command, the device info, and the tv-induced bus
error.
With a new IDL session the TV command does create a new window (#0) so
it seems to successfully connect and send windows to the localhost.
Then IDL pauses, while the CPU usage goes up to 100 % on one CPU, then
finally it dumps me back to the shell.
FYI, I can successfully ssh to my linux box (IDL 6.3) and run the same
commands and send the windows back to my mac just fine.
I guess I have no choice but to upgrade if I want my TVSCL back.
Thanks,
Don
IDL> help,!d,/str
** Structure !DEVICE, 17 tags, length=84, data length=84:
NAME STRING 'X'
X_SIZE LONG 640
Y_SIZE LONG 512
X_VSIZE LONG 640
Y_VSIZE LONG 512
X_CH_SIZE LONG 6
Y_CH_SIZE LONG 9
X_PX_CM FLOAT 40.0000
Y_PX_CM FLOAT 40.0000
N_COLORS LONG 256
TABLE_SIZE LONG 256
FILL_DIST LONG 1
WINDOW LONG -1
UNIT LONG 0
FLAGS LONG 328124
ORIGIN LONG Array[2]
ZOOM LONG Array[2]
IDL> plot,findgen(10)
IDL> help,!d.name
<Expression> STRING = 'X'
IDL> help,/device
Available Graphics Devices: CGM HP LJ NULL PCL PRINTER PS REGIS TEK X
Z
Current graphics device: X
Server: X11.0, The X.Org Foundation, Release 70200000
Display Depth, Size: 24 bits, (1280,1003)
Visual Class: TrueColor (4)
Bits Per RGB: 8 (8/8/8)
Physical Color Map Entries (Emulated / Actual): 256 / 256
Colormap: Shared, 16777216 colors. Translation table: Bypassed
Graphics pixels: Decomposed, Dither Method: Ordered
Write Mask: 16777215 (decimal) ffffff (hex)
Graphics Function: 3 (copy)
Current Font: <default>, Current TrueType Font: <default>
Default Backing Store: Pixmap.
Window Status: ---------------------
id typ( x, y, backing store) id typ( x, y,
backing store)
0: Win( 640, 501, Pixmap)
IDL> xyouts,.5,.5,'Center'
IDL> window,3
IDL> tv,dist(128)
% Compiled module: DIST.
Bus error
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| Re: idl 6.3 bus error during tv [message #57966 is a reply to message #57832] |
Fri, 04 January 2008 10:06 |
don.woodraska
Messages: 13
Registered: October 2005
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Junior Member |
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First off, thank you to Mike and David for your help and interest in
this peculiar problem. I appreciate your efforts in trying to help
out, and I know it's hard to diagnose someone else's problem.
> So widget programs work for you? Not just starting a widget app, but
> interacting with it? This was my problem when I upgraded to Leopard
> with IDL 6.4. Upgrading to IDL 6.4.1 (or IDL 7.0) fixed it.
Yep, widgets work just fine. I am able to run the idlbridge_demo.pro
and click on buttons, use pulldown menus, and everything works great.
As far as I can tell I have a completely function windowing system
except for TV and TVSCL. If you can think of anything else, I'd be
happy to give it a try.
I am able to reproduce the problem David describes on his website (a
bus error) when DISPLAY is not set correctly. I used (tcsh)
unsetenv DISPLAY
which makes the DISPLAY variable undefined. I then ran IDL and got a
bus error when trying to open window with plot. No window appeared,
just a bus error. This is different than my original problem.
When I setenv DISPLAY to the correct value (like localhost:0.0), PLOT
works fine. I've tried several values that all work like 127.0.0.1,
and my actual IP address as well. (I have localhost defined in the /
etc/hosts file as 127.0.0.1)
My problem still persists. If I start a new session and execute TV, it
creates the empty window (filled with black nothingness), then it
hangs up and gives the bus error.
Mike, thank you for the advice on updating IDL versions and providing
the X11 updates link. These seem to be the only thing left to try. I'm
a command line dinosaur, so I have to first overcome my (irrational
and unfounded) fear of eclipse.
Best Regards and thanks again,
Don
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