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Like the ModelBuilder of ArcGIS for Desktop to run simultaneous geoprocessing tools, is there any model builder available in QGIS or any other open source GIS software?

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4 Answers 4

Sextante is a geoprocessing library that can be used from several GIS applications. I recommend you to use it from gvSIG as i think that it has the best integration. Sextante also allows (if you configure it properly) use algorithms from SAGA and GRASS.

Here you can see a video that shows how the modeler works.

Update: From March, qgis also has a Sextante plugin that works really well.

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GRASS has a model builder that works pretty well (don't know how it compares to the Arc* one).

Victor Olaya, the developer of Sextante is currently working on Sextante for QGIS. It's work-in-progress and not yet ready for production use so use with care. You can watch a short demonstration of the Sextante model builder here: http://www.youtube.com/watch?v=LTUu-I2ouqU

Update Nov 2012: Sextante for QGIS is developing very well, as you can see eg. in this new case study: http://www.qgis.org/en/community/qgis-case-studies/pinhel-portugal.html

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Publishing such models as Web Processing Services (WPS) would also be good to have in the QGIS RoadMap if it is not there already. –  PolyGeo Feb 15 '12 at 11:54
    
QGIS offers a WPS client extension. See also youtube.com/watch?v=jg2pb_Xjq8Y –  markusN Feb 16 '12 at 10:06
    
See here for the GRASS GIS Model builder: grass.osgeo.org/wiki/WxGUI_Modeler –  markusN Feb 16 '12 at 10:06

I am glad to inform that we are currently working on SEXTANTE for QGIS. It should be ready soon, and it will include the modeler, which is what you are asking for.

Regards

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2  
Can we ask who exactly is "we"? "The community", you, your company? Just curios. Is there any wiki talking about the development? I think the QGIS community would be very interested! –  RyanDalton Mar 6 '12 at 19:51

You may also consider some basic Python scripting to run multiple commands in series.

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Thanks. I am pretty new to QGIS and scripting. All I need to get done is .. enter a value for a polygon and which give me the list of all polygon values adjoining ...Kind of proximity analysis.Any ideas on this... –  Senthil Feb 15 '12 at 16:56
    
IN GRASS (and so in QGIS trough the QGIS/GRASS plugin) you can do proximity analysis, but this does mean you need a model builder. –  Giovanni Manghi Feb 15 '12 at 17:43

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