[Qgis-developer] analytical workflow

[Andreas Neumann]

 Personally I use FME (Safe Software, commercial) which has a graphical 
 workbench. I think it is quite powerfuly and easy to use (not for 
 everything, but a lot).

 Geokettle is something similar to FME (based on Java and not as 
 powerful as FME, but getting closer).

 It would be nice to have something similar that integrates nicely with 
 QGIS.

 Andreas

 On Tue, 23 Aug 2011 14:08:23 +0200, Martin Dobias wrote:
> Hi Paolo
>
> On Mon, Aug 22, 2011 at 10:51 AM, Paolo Cavallini
> <cavallini at faunalia.it> wrote:
>> Hi all.
>> One of the great thing we plan to develop for the new Processing 
>> framework it to make
>> easy for user to pipe one command into another, so to build complex 
>> workflows of
>> analysis.
>> One idea: add a + button on the single module window to add further 
>> modules in a
>> chain, taking the output of the first command and giving it as an 
>> input to the next
>> one; moreover we could have a Save button to store the command 
>> sequence in a file.
>> Of course one could think of more complex extensions, adding support 
>> for cycles,
>> recursivity etc., but this seems a simple approach to start with.
>> Comments or ideas?
>
> I am not sure if it makes sense to spend time on a solution like this
> because the number of use cases is quite limited. Surely one could
> create simple linear chains of modules, but creating anything more
> complex would be quite inconvenient (e.g. a process where module C
> uses output of modules A and B). I believe that a graphical model
> builder (where a box = module, an arrow = data transfer) is the only
> long term solution, something like this:
> http://grass.osgeo.org/wiki/WxGUI_Modeler
>
> Martin
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 Andreas Neumann
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 Switzerland