Python Geprocessing Plugin

[Düster Horst]

A new Geoprocressing Python plugin is available in the Python Plugin Repository.  
 
http://spatialserver.net:3001 
 
 
This plugin  is under developement and offers vector analysis functions for ogr and postgis vector data.  
 
The following functions are available:
 - Buffer
 - Convex Hull
 - Difference A - B
 - Dissolve
 - Intersection
 
under developement:
 - SymDifference
 - Union
 
 
The plugin needs QGIS Rev. 8153 or higher!
 
The plugin uses the GEOS library. I recommend the use of GEOS-3.0.0.  
 
Unfortunately there are some issues with GEOS. In some cases GEOS throws topology exceptions when you try to dissolve large datasets => QGIS crashes.   
 
I hope that this plugin can be helpful for you and I look forward for your comments and ideas.
 
Regards  
Horst
 
 
 
------------------------------------------------
 
Dr. Horst Düster
GIS-Koordinator, Stv. Amtschef
 
Kanton Solothurn
Bau- und Justizdepartement
Amt für Geoinformation
SO!GIS Koordination
Rötistrasse 4
CH-4501 Solothurn
 
Telefon ++41(0)32 627 25 32
Telefax ++41(0)32 627 22 14
 
mailto:horst.duester@...
http://www.agi.so.ch
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[Maciej Sieczka]

Düster Horst pisze:
> A new Geoprocressing Python plugin is available in the Python Plugin
> Repository.
>
> http://spatialserver.net:3001

That's excellent news Düster! Congrats!

Maciek
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[Nikos Alexandris]

Cool!


On Sun, 2008-02-17 at 13:14 +0100, Maciej Sieczka wrote:

> Düster Horst pisze:
> > A new Geoprocressing Python plugin is available in the Python Plugin
> > Repository.
> >
> > http://spatialserver.net:3001
>
> That's excellent news Düster! Congrats!
>
> Maciek
> _______________________________________________
> Qgis-user mailing list
> Qgis-user@...
> http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user

--

Nikos Alexandris
.
Department of Remote Sensing & Landscape Information Systems
Faculty of Forestry & Environmental Sciences, Albert-Ludwigs-University Freiburg
.
Tel.  [phone] / Fax.  [phone] / Skype: Nikos.Alexandris
.
Address: Tennenbacher str. 4, D-79106 Freiburg i. Br., Germany


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[John C. Tull-3]

Horst,

I tried on OS X. Here are my observations and issues so far:

1) The installer does not work. I get a permissions error when trying  
to use the python installer. Manual installation works ok.

2) When I run the plugin in a project with available vectors, the drop-
down menu for selecting a vector to geoprocess does not populate with  
anything. So I am unable to perform any geoprocessing because there  
are not vectors available to work on in the gui.

Because of problem 2), I am unable to get very far in testing this. I  
will be around on the irc channel today and off-and-on this week if  
you want to try and work out some things online.

Thanks,
John

On Feb 17, 2008, at 2:30 AM, Düster Horst wrote:

> A new Geoprocressing Python plugin is available in the Python Plugin  
> Repository.
>
> http://spatialserver.net:3001
>
>
> This plugin  is under developement and offers vector analysis  
> functions for ogr and postgis vector data.
>
> The following functions are available:
>  - Buffer
>  - Convex Hull
>  - Difference A - B
>  - Dissolve
>  - Intersection
>
> under developement:
>  - SymDifference
>  - Union
>
>
> The plugin needs QGIS Rev. 8153 or higher!
>
> The plugin uses the GEOS library. I recommend the use of GEOS-3.0.0.
>
> Unfortunately there are some issues with GEOS. In some cases GEOS  
> throws topology exceptions when you try to dissolve large datasets  
> => QGIS crashes.
>
> I hope that this plugin can be helpful for you and I look forward  
> for your comments and ideas.
>
> Regards
> Horst
>
>
>
> ------------------------------------------------
>
> Dr. Horst Düster
> GIS-Koordinator, Stv. Amtschef
>
> Kanton Solothurn
> Bau- und Justizdepartement
> Amt für Geoinformation
> SO!GIS Koordination
> Rötistrasse 4
> CH-4501 Solothurn
>
> Telefon ++41(0)32 627 25 32
> Telefax ++41(0)32 627 22 14
>
> mailto:horst.duester@...
> http://www.agi.so.ch
> _______________________________________________
> Qgis-developer mailing list
> Qgis-developer@...
> http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-developer

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[John C. Tull-3]

Horst,

The first problem below was resolved by Gary Sherman. I had an older  
version of the Plugin Installer in the plugin folder. Removing that  
allowed the built-in installer plugin to run, and that fixed the  
permissions problem.

Still no luck with problem 2 at this point. I tried on my ubuntu vm  
and the menu worked as expected, so this may be a mac-specific issue.

Cheers,
John

On Feb 18, 2008, at 11:24 AM, John C. Tull wrote:

> Horst,
>
> I tried on OS X. Here are my observations and issues so far:
>
> 1) The installer does not work. I get a permissions error when  
> trying to use the python installer. Manual installation works ok.
>
> 2) When I run the plugin in a project with available vectors, the  
> drop-down menu for selecting a vector to geoprocess does not  
> populate with anything. So I am unable to perform any geoprocessing  
> because there are not vectors available to work on in the gui.
>
> Because of problem 2), I am unable to get very far in testing this.  
> I will be around on the irc channel today and off-and-on this week  
> if you want to try and work out some things online.
>
> Thanks,
> John
>
> On Feb 17, 2008, at 2:30 AM, Düster Horst wrote:
>
>> A new Geoprocressing Python plugin is available in the Python  
>> Plugin Repository.
>>
>> http://spatialserver.net:3001
>>
>>
>> This plugin  is under developement and offers vector analysis  
>> functions for ogr and postgis vector data.
>>
>> The following functions are available:
>> - Buffer
>> - Convex Hull
>> - Difference A - B
>> - Dissolve
>> - Intersection
>>
>> under developement:
>> - SymDifference
>> - Union
>>
>>
>> The plugin needs QGIS Rev. 8153 or higher!
>>
>> The plugin uses the GEOS library. I recommend the use of GEOS-3.0.0.
>>
>> Unfortunately there are some issues with GEOS. In some cases GEOS  
>> throws topology exceptions when you try to dissolve large datasets  
>> => QGIS crashes.
>>
>> I hope that this plugin can be helpful for you and I look forward  
>> for your comments and ideas.
>>
>> Regards
>> Horst
>>
>>
>>
>> ------------------------------------------------
>>
>> Dr. Horst Düster
>> GIS-Koordinator, Stv. Amtschef
>>
>> Kanton Solothurn
>> Bau- und Justizdepartement
>> Amt für Geoinformation
>> SO!GIS Koordination
>> Rötistrasse 4
>> CH-4501 Solothurn
>>
>> Telefon ++41(0)32 627 25 32
>> Telefax ++41(0)32 627 22 14
>>
>> mailto:horst.duester@...
>> http://www.agi.so.ch
>> _______________________________________________
>> Qgis-developer mailing list
>> Qgis-developer@...
>> http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-developer
>

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