[GRASS5] nviz problem
Huidae Cho
grass4u at gmail.com
Mon Dec 20 12:28:06 EST 2004
Hi,
Your fix doesn't work:
----------------------
GRASS 5.7.cvs:~/tmp > cat i
#!/bin/sh
exec nviz -f $GISBASE/etc/nviz2.2/scripts/nviz2.2_script "$@"
GRASS 5.7.cvs:~/tmp > ./i
Illegal filename. character </> not allowed.Error: Raster /home/geni/usr/grass/grass51/dist.i686-pc-cygwin/etc/nviz2.2/scripts/nviz2.2_script does not exist in current Mapset
Load Failed
GRASS 5.7.cvs:~/tmp >
----------------------
nviz2.2_script is not a map but a script. The error message comes from the
grass parser library not from tcl/tk. I think nviz is a grass module itself,
so it doesn't accept parameters except grass ones.
If -f option is given:
nviz -f nviz_script grass parameters
Otherwise:
nviz -- grass parameters
This is what I understand, but where does nviz do something for "-f"
option? I cannot find it.
When I run "nviz -f elev=dem500" which should be wrong, nviz displays
dem500 and tries to find "elev=dem500" script without success:
----------------------
Loading Data
translating colors from fp
recalculating normals...
Error in startup script: couldn't read file "elev=dem500": no such file
or directory
----------------------
I think the tcl/tk parser conflicts with the grass parser and maybe
tcl/tk sould have a priority here.
Thank you.
Huidae Cho
On Mon, Dec 20, 2004 at 09:18:11AM -0400, Bob Covill wrote:
> Hi,
>
> I was finally able to duplicate the background error on my RedHat 7.3
> system. For some reason it works fine on my RedHat 9 system.
>
> I have searched the Tcl/Tk archives for documentation of similar
> problems, but found nothing.
>
> In the meantime I have got the following script to work.
>
> #!/bin/sh
> exec nviz -f $GISBASE/etc/nviz2.2/scripts/nviz2.2_script "$@"
>
> This seems to work if started in the foreground or background, but I
> have not tested it properly. In order to use the above script you have
> to first edit nviz_init.c in visualization/nviz/src and comment out the
> following line ...
>
> if (!script_mode)
> Tcl_Eval(interp, nviz_script); /* source nviz_script to
> start main window */
>
> After commenting, rebuild nviz and run the above script. Hopefully this
> will work for you.
>
> Now that I have an idea of where the problem is originating, hopefully I
> can figure out a more permanent solution. Suggestions welcome.
>
> --
> Bob
>
>
> Huidae Cho wrote:
> >Hi, output is the following:
> >
> >GRASS 5.7.cvs:~/tmp > cat a
> >#!/bin/sh
> >exec nviz "$0" "$@"
> >GRASS 5.7.cvs:~/tmp > ./a elev=dem&
> >[1] 1112
> >GRASS 5.7.cvs:~/tmp > Loading Data
> >Loading Data
> >translating colors
> >recalculating normals...
> >% w 100
> >
> >[1]+ Stopped ./a elev=dem
> >GRASS 5.7.cvs:~/tmp >
> >
> >It stops just after displaying map and empty control windows and
> >if I "fg", it starts working again.
> >
> >I think behavior is not consistent from system to system.
> >
> >
> >Huidae Cho
> >
> >
> >On Sat, Dec 18, 2004 at 04:29:33PM +0000, Bob Covill wrote:
> >
> >>Hi,
> >>
> >>
> >>
> >>This is an interesting one. If I execute something like "nviz -q &", nviz
> >>
> >>starts up normally with the wish (%) prompt. If I hit enter at the prompt
> >>I
> >>
> >>am returned to the normal command line prompt and can run other commands
> >>
> >>(while nviz is running). When I quit nviz I get the respone on the command
> >>
> >>line ...
> >>
> >>[1]+ Done nviz -q
> >>
> >>which is what I would expect from a command that has been running in the
> >>
> >>background.
> >>
> >>
> >>
> >>Out of curiousity try creating a simple startup script with the following:
> >>
> >>
> >>
> >>#!/bin/sh
> >>
> >>exec nviz "$0" "$@"
> >>
> >>
> >>
> >>Make it executable and try running it in the background. For example if
> >>you
> >>
> >>name the script nv_start.sh, try "nv_start.sh elev=dem &" and see if that
> >>
> >>works.
> >>
> >>
> >>
> >>--
> >>
> >>Bob
> >>
> >>
> >>
> >>
> >>
> >>On 12/18/2004, "Huidae Cho" <grass4u at gmail.com> wrote:
> >>
> >>
> >>
> >>
> >>>Interesting!
> >>
> >>>Is wish running in background? As I know, a shell-like program cannot be
> >>
> >>>running in that way because if it's bg'ed or run with "&", /bin/sh or
> >>
> >>>the login shell takes control of stdin so that users can stay in the
> >>>login
> >>
> >>>shell.
> >>
> >>>If it's executed by a script, then it's ok because it's a usual shell
> >>
> >>>script.
> >>
> >>>Do you mean running "nviz" and executing other programs in the "%" nviz
> >>
> >>>prompt instead of running "nviz &"?
> >>
> >>>If wish is running in background (wish &), how can you execute wish
> >>
> >>functions?
> >>
> >>
> >>>Thank you.
> >>
> >>>Huidae Cho
> >>
> >>>On Sat, Dec 18, 2004 at 01:22:50PM +0000, Bob Covill wrote:
> >>
> >>>>Hi,
> >>>
> >>>>It appears that not even wish will run in the background on your system
> >>>
> >>...
> >>
> >>
> >>>>very strange.
> >>>
> >>>>The current nviz IS the old NVWISH executable which was called was
> >>>>called
> >>>
> >>by
> >>
> >>
> >>>>the old nviz shell script. The reason I got rid of the shell script was
> >>>
> >>>>because when nviz encountered an error the same un-informitive message
> >>>
> >>was
> >>
> >>
> >>>>generated because it was passed through the script. Also, there are a
> >>>
> >>number
> >>
> >>
> >>>>of error catches in the actual nviz tcl scripts which were completely
> >>>
> >>ignored
> >>
> >>
> >>>>with the old shell startup.
> >>>
> >>>>Before reverting to the old startup it would be nice to know why wish
> >>>
> >>(and
> >>
> >>
> >>>>nviz) will not run in the background on some systems. On both of my
> >>>
> >>RedHat
> >>
> >>
> >>>>systems it runs fine both in the background and the foreground.
> >>>
> >>>>--
> >>>
> >>>>Bob
> >>>
> >>>>On 12/18/2004, "Huidae Cho" <grass4u at gmail.com> wrote:
> >>>
> >>>>>Hi,
> >>>>
> >>>>>Now nviz is not a *wish script but a shell itself. That's why it prints
> >>>>
> >>>>>a prompt and we cannot execute it background and inside "d.m &". To fix
> >>>>
> >>>>>this problem, I think we should go back to NVWISH because running nviz
> >>>>
> >>>>>foreground is pain.
> >>>>
> >>>>>You can test this:
> >>>>
> >>>>> wish &
> >>>>
> >>>>>prints % prompt and just stop!
> >>>>
> >>>>>Huidae Cho
> >>>>
> >>>>>On Fri, Dec 17, 2004 at 09:02:39PM -0400, Bob Covill wrote:
> >>>>
> >>>>>>Hello,
> >>>>>
> >>>>>>I tried running the latest version of nviz in the background with
> >>>>>
> >>>>>>various options and it seems to work fine. The "%" prompt that you see
> >>>>>
> >>>>>>is perfectly normal. The nviz program is simply a customized version
> >>>>>
> >>of
> >>
> >>
> >>>>>>the Tcl/Tk "wish" executable. Try executing "wish" on the command line
> >>>>>
> >>>>>>and you should see the same prompt.
> >>>>>
> >>>>>>As for it crashing when it is run in the background, I have no idea.
> >>>>>
> >>You
> >>
> >>
> >>>>>>might try changing GRASS_MESSAGE_FORMAT environment variable to see if
> >>>>>
> >>>>>>that has any effect.
> >>>>>
> >>>>>>It might help to know what platform and Tcl/Tk version it is failing
> >>>>>
> >>on.
> >>
> >>
> >>>>>>For me it works on RedHat 7.3 with Tk8.3, and RedHat 9 with Tk8.4.
> >>>>>
> >>>>>>--
> >>>>>
> >>>>>>Bob
> >>>>>
> >>>>>>Helena wrote:
> >>>>>
> >>>>>>>Huidae Cho wrote:
> >>>>>>
> >>>>>>>>Hi,
> >>>>>>>
> >>>>>>>>I noticed today that nviz doesn't work if I run it background as
> >>>>>>>
> >>>>before.
> >>>
> >>>>>>>>Similarly, it just stops after displaying a map when it's executed
> >>>>>>>
> >>from
> >>
> >>
> >>>>>>>>"d.m &" which is recommended in the welcome message.
> >>>>>>>
> >>>>>>>>nviz elevation=dem & # doesn't work
> >>>>>>>
> >>>>>>>>d.m & # nviz doesn't work
> >>>>>>>
> >>>>>>>>nviz elevation=dem # works!
> >>>>>>>
> >>>>>>>>d.m # nviz works!
> >>>>>>>
> >>>>>>>>And I see nviz prints % prompt. Does anyone have a clue?
> >>>>>>>
> >>>>>>>It must be the latest change that was done - I just tried it and it
> >>>>>>
> >>>>>>>does not work even if I do nviz elevation=dem, it displays the DEM
> >>>>>>
> >>>>>>>but fails to open the Main pannel and prints a % prompt.
> >>>>>>
> >>>>>>>It worked OK just a few days (weeks?) ago.
> >>>>>>
> >>>>>>>It may be related to the change in the startup script - Bob, are you
> >>>>>>
> >>>>>>>around? How does it work for you?
> >>>>>>
> >>>>>>>Helena
> >>>>>>
> >>>>>>>>Thanks.
> >>>>>>>
> >>>>>>>>Huidae Cho
> >>>>>>>
> >>>>>>>>_______________________________________________
> >>>>>>>
> >>>>>>>>grass5 mailing list
> >>>>>>>
> >>>>>>>>grass5 at grass.itc.it
> >>>>>>>
> >>>>>>>>http://grass.itc.it/mailman/listinfo/grass5
> >>>>>>>
> >>>_______________________________________________
> >>
> >>>grass5 mailing list
> >>
> >>>grass5 at grass.itc.it
> >>
> >>>http://grass.itc.it/mailman/listinfo/grass5
> >>
> >
> >
>
>
> --
> Bob Covill
>
> Tekmap Consulting
> P.O. Box 2016
> Fall River, N.S.
> B2T 1K6
> Canada
>
> E-Mail: bcovill at tekmap.ns.ca
> Phone: 902-860-1496
> Fax: 902-860-1498
----- End forwarded message -----
More information about the grass-dev
mailing list