error creating a GRASS location

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Paolo Cavallini

error creating a GRASS location

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Hi all.
Just finished a workshop (21 people!) on qgis+grass at the sasig in
Evora[0]. Went very well, all from a USB pen [1, 2]; people looked
enthusiastic.
We just had a couple of problems (which, given the range of tasks I have
been trying, is quite good to me):
- a space in the path prevented r.contour from running successfully
- the creation of a location, taking the extent from a loaded map, crashed
systematically qgis with:

Warning: QMetaObject::connectSlotsByName: No matching signal for
on_btnHelp_clicked()
terminate called after throwing an instance of 'QgsGrass::Exception'
what():  region for current mapset is not set
run "g.region"
Aborted

Unfortunately I cannot investigate much, as the user has left, and I cannot
replicate it on my machine, so I'll not open a bug, I mention here just for
the record, and in case it helps understanding a potential weakness.
All the best.
--
http://faunalia.it/pc

[0] http://evora.sigaberto.org
[1] http://evora.sigaberto.org/downloads/sasig2009_final.img.tar.gz
[2] http://www.faunalia.pt/usbgis
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Markus Neteler

Re: [GRASS-dev] error creating a GRASS location

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On Wed, Nov 4, 2009 at 5:24 PM, Paolo Cavallini <[hidden email]> wrote:
>
> Hi all.
> Just finished a workshop (21 people!) on qgis+grass at the sasig in
> Evora[0]. Went very well, all from a USB pen [1, 2]; people looked
> enthusiastic.
> We just had a couple of problems (which, given the range of tasks I have
> been trying, is quite good to me):
> - a space in the path prevented r.contour from running successfully

... I have tried that on Linux with 6.4.0svn (current), no problem.
Which OS did you use there? The Ubuntu 9.04 GNU/Linux on the stick?

> - the creation of a location, taking the extent from a loaded map, crashed
> systematically qgis with:
>
> Warning: QMetaObject::connectSlotsByName: No matching signal for
> on_btnHelp_clicked()
> terminate called after throwing an instance of 'QgsGrass::Exception'
> what():  region for current mapset is not set
> run "g.region"
> Aborted

I see the same error here:
http://forum.qgis.org/viewtopic.php?f=2&t=5019#p8664
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=549120

https://trac.osgeo.org/qgis/ticket/1964
-> set by pcav to invalid :)

Perhaps GRASS is crashing only subsequently?

> Unfortunately I cannot investigate much, as the user has left, and I cannot
> replicate it on my machine, so I'll not open a bug, I mention here just for
> the record, and in case it helps understanding a potential weakness.

Is this right:
- which GRASS version: GRASS 6.4Rc5?
- which operating system: Ubuntu 9.04 GNU/Linux?

Or did the user bring his own machine?

Markus
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Paolo Cavallini

Re: [GRASS-dev] error creating a GRASS location

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On Wed, 4 Nov 2009 20:56:54 +0100, Markus Neteler <[hidden email]>
wrote:
> On Wed, Nov 4, 2009 at 5:24 PM, Paolo Cavallini <[hidden email]>
> wrote:

>> - a space in the path prevented r.contour from running successfully
>
> ... I have tried that on Linux with 6.4.0svn (current), no problem.
> Which OS did you use there? The Ubuntu 9.04 GNU/Linux on the stick?

the stick, with qgis 1.4 self compiled 10 days ago.

>> Warning: QMetaObject::connectSlotsByName: No matching signal for
>> on_btnHelp_clicked()
>> terminate called after throwing an instance of 'QgsGrass::Exception'
>> what():  region for current mapset is not set
>> run "g.region"
>> Aborted
>
> I see the same error here:
> http://forum.qgis.org/viewtopic.php?f=2&t=5019#p8664
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=549120
>
> https://trac.osgeo.org/qgis/ticket/1964
> -> set by pcav to invalid :)
>
> Perhaps GRASS is crashing only subsequently?

The error seems different to me:
what(): Incompatible library version for module. You need to rebuild GRASS
or untangle multiple installations.

> Is this right:
> - which GRASS version: GRASS 6.4Rc5?

yes

> - which operating system: Ubuntu 9.04 GNU/Linux?

yes, as above.

Thanks.
--
http://faunalia.it/pc
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