[GRASS5] nviz problem

[Bob Covill]

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
>> >>
>> >>_______________________________________________
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>> >>http://grass.itc.it/mailman/listinfo/grass5
>> >
>> >
>
>