[Qgis-developer] analytical workflow

[Werner Macho]

Hi!

I agree with martin - such a Modeler could be a great improvement but
I assumed it would be somethink like the WxGUI_Modeler ..
(Also ESRI has something like that)
Putting things(modules) together like a diagram would be much easier
for the user than remembering a chain ..
Did not Tim start something like that with Openmodeler?
(http://openmodeller.sourceforge.net/)
Do you think we could use that?

regards
Werner

On Tue, Aug 23, 2011 at 2:08 PM, Martin Dobias <wonder.sk at gmail.com> 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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