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I'm using QGIS 2.18,12 with the GRASS module 7.2.1 on Windows. When building a model in QGIS , I am not able to see all the algorithms possible under thr GRASS module, that are indeed available within QGIS, but simply not in the graphic modeler. Specifically, I need to use v.out.ogr (screenshot attached).

How can I include this in the modeler?

It is vital that I have v.out.ogr built-in the modeler, and not select the function via Plugins > GRASS, and then from the GRASS Tools: File management> export from GRASS> export vector from GRASS.

enter image description here

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You could create a new description file in your C:/Program Files/QGIS 2.18/apps/qgis/python/plugins/processing/algs/grass7/description directory (or wherever you installed it) and add the parameters used by the tool. Create a new text file and use the following:

v.out.ogr
Exports a vector map layer to any of the supported OGR vector formats.
Vector (v.*)
ParameterVector|input|Name of input vector map|-1|False
OutputVector|output|Output vector

Name the file v.out.ogr and save it as a text file. Then place it in the directory mentioned above and restart QGIS. You should now be able to call this tool from the Processing Toolbox and from the modeler:

Example

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    Great, worked for me! To people facing similar problems, notice there are two folders ("grass" & "grass7") under "C:\Program Files\QGIS 2.18\apps\qgis\python\plugins\processing\algs", and to make sure to place the description txt file in 'grass7', as mentioned above. Thx!
    – 15Step
    Commented Sep 14, 2017 at 11:23
  • @Nimrod - Most welcome! Glad it works and thanks for the comment :)
    – Joseph
    Commented Sep 15, 2017 at 9:23

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