[Qgis-developer] [Qgis-user] Any working GRASS in QGIS available? - Processing Bug?

Sun Aug 2 16:37:27 PDT 2015

Hi Alex

Am 03.08.2015, 01:20 Uhr, schrieb Alex Mandel <tech_dev at wildintellect.com>:

> Ah but we're closer to finding a solution with all those details. It may
> be fixable in Processing, which can be pushed to the plugin repo for
> update any time.
>
> Passing this along to devs who might have enough information now.
>
> Thanks,
> Alex

Thanks for taking care,

by the way: by copying the gdal algorithms from processing 2.10.1 to the  
2.9.3 folder (.qgis2/python/plugins/processing/algs/gdal), I gained access  
to the new GDAL dissolve polygons :)

Unfortunately, the model from before (GRASS6) didn't work anymore, and all  
attempts to adjust it via diff of a test model failed. So reworking my  
model (for the 10th time or so) in Ubuntu 2.8.3 from ubuntugis-ltr with  
working GRASS7, SAGA and everything and a partially upgraded Processing  
2.9.3

I'm on my way ... finally .. hopefully ...

Bernd

> On 08/02/2015 03:07 PM, Bernd Vogelgesang wrote:
>> Am 02.08.2015, 22:44 Uhr, schrieb Alex Mandel  
>> <tech_dev at wildintellect.com>:
>>
>>> After some brief testing, my OSGeoLive 8.5 VM with QGIS 2.6 and
>>> Processing 2.9.3, GRASS 7 works.
>>>
>>> My QGIS 2.8, GRASS 6/7, Processing 2.10.1 does not.
>>
>> Gave Windows another try: Removed everything, and installed the simple
>> install OSGEO4W setup.
>> QGIS 2.10.1 with Processing 2.10.1 and GRASS 6 working.
>>
>> switched back to Ubuntu, cause of a bug in the modeler version of GDAL
>> Dissolve Polygons (which is crucial for me).
>> https://hub.qgis.org/issues/13174
>>
>> Ubuntu: Now that I installed 2.8 with the debian repository only (so
>> without ubuntis depencies), my GRASS 6 works (sorted out another error,
>> that GRASS takes a column name "OR" from shape as an sql-command or
>> sth), update to Processing 2.10.1 worked as well.
>>
>> The drawback, no SAGA, which might come handy cause the now available
>> algos do not really do what I expect ;)
>>
>> I think the problem is within Processing in combination with the  
>> packaging:
>> When e.g. I install QGIS 2.8 with ubuntugis-ltr dependencies (where
>> nobody on the install page claims I shouldn't do), GRASS7 and the
>> modeler are working, but Processing version is 2.6. Updating Processing
>> to current Processing 2.10.1 (as recommended) seems to work.
>> (Besides that v.clean in the modeler only returns a polygon layer from
>> an polygon input, if I also set an output name for the error layer,
>> otherwise I get an empty line shape)
>>
>> But: The next time I run QGIS and want to run an GRASS algo: Missing
>> depencies
>>
>> I can now replace Processing 2.10.1 with the second latest 2.9.3 from
>> https://plugins.qgis.org/plugins/processing/version/2.9.3/
>> and there v.clean does what it should in Processing AND modeler.
>>
>> But: Now I do not have GDAL Dissolve polygons which is in Processing
>> 2.10.1. Well, I could switch back to Windows QGIS 2.10, but, grr, there
>> is the bug in this algo ...
>>
>> You see, I'm trapped.
>>
>> Thanx for you attention
>> Bernd
>>
>>
>>
>>>
>>> Both are Ubuntu 14.04 based.
>>>
>>> I'm not sure if this is a bug in Processing, or in packaging. I recall
>>> in OSGeoLive 8.5 that we had custom packages with a patch. Note, you  
>>> can
>>> get those versions for your Ubuntu system from
>>> https://launchpad.net/~osgeolive/+archive/ubuntu/release-8.5
>>>
>>> We freeze a copy of the working versions in our own ppa for long term
>>> history.
>>>
>>> Thanks,
>>> Alex
>>>
>>>
>>> On 2015-08-02 03:32, Bernd Vogelgesang wrote:
>>>> Hi Alex,
>>>>
>>>> Am 02.08.2015, 01:22 Uhr, schrieb Alex Mandel
>>>> <tech_dev at wildintellect.com>:
>>>>
>>>>> It's not a Windows/Ubuntu/Mac/OS thing, it's a QGIS + GRASS version
>>>>> change thing.
>>>>>
>>>>> Please indicate which version of QGIS and GRASS you are trying to get
>>>>> working.
>>>>
>>>> Actually I do not mind any more what version I would like to get
>>>> working. I would have preferred the 2.8-LTR branch with no-matter-what
>>>> GRASS version.
>>>>
>>>> I just would like to be able to finish my project, and there is
>>>> unfortunately no alternative to the GRASS algos in my model.
>>>>
>>>>> QGIS 2.6 and older works with GRASS 6, 2.8+ sometimes is built to  
>>>>> work
>>>>> with GRASS 7 (though possibly also with GRASS 6).
>>>>
>>>> Mhm, reverting to 2.6 ... Lets see if this still possible at all ...
>>>>
>>>>> If you want a guaranteed working setup ASAP download a copy of OSGeo
>>>>> Live Virtual Machine, we made sure that it works in that.
>>>>> http://live.osgeo.org
>>>>
>>>> Will give it a try. Download will take another 1.5 hours ...
>>>>
>>>> So does that mean that even your do not have a working GRASS in a  
>>>> recent
>>>> QGIS by "normal" means but the osgeo VM?
>>>>
>>>>
>>>>>
>>>>> Thanks,
>>>>> Alex
>>>>
>>>> Cheers
>>>> Bernd
>>>>
>>>>>
>>>>> On 2015-08-01 14:41, Bernd Vogelgesang wrote:
>>>>>> Hi guys,
>>>>>> is it just bad karma, that I seem not to able to get a working
>>>>>> GRASS in
>>>>>> QGIS? Or did I miss the big advertisement "GRASS out of order"
>>>>>> somewhere.
>>>>>>
>>>>>> For nearly 2 weeks, I tried to get things to work in Ubuntu/Mint,  
>>>>>> and
>>>>>> tried every possible/impossible repository, but always GRASS has
>>>>>> missing
>>>>>> dependencies, the forms open in Processing, but the algos don't run
>>>>>> through, or the functions are working in Processing, but failing in
>>>>>> the
>>>>>> modeller.
>>>>>>
>>>>>> As I really got to finish a model in the Modeller including some  
>>>>>> GRASS
>>>>>> algos, I finally turned on my VM with Windows ...
>>>>>> but what the heck? Same s...t there!
>>>>>>
>>>>>> I really wonder why there aren't many post about trouble with GRASS  
>>>>>> on
>>>>>> this list or at stackexchange, normally this would explode when  
>>>>>> things
>>>>>> like these happen.
>>>>>>
>>>>>> So am I really the one with the bad karma, do you all other simply  
>>>>>> not
>>>>>> use GRASS in processing as much as I do, or do you all simply have
>>>>>> working installs, so there is not problem?
>>>>>>
>>>>>> Please, at least one: Do you have an install under Ubuntu or  
>>>>>> Windows,
>>>>>> where GRASS algos are functional in the Modeler ? If yes, which
>>>>>> version/what did you do?
>>>>>>
>>>>>> ... Soon, I will go and find me a rope ...
>>>>>>
>>>>>> Bernd
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
>>>
>>
>>
>
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Bernd Vogelgesang
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