[Qgis-user] Issues by using a script inside the python console

[Hesels, Marie-Christine]

Hi Richard,


thanks for your hint! By adding the QgsProcessingFeatureSourceDefinition, it works :)


Regards,

Marie

________________________________
Von: Richard Duivenvoorde <rdmailings at duif.net>
Gesendet: Dienstag, 13. September 2022 20:46:59
An: Hesels, Marie-Christine; qgis-user at lists.osgeo.org
Betreff: Re: [Qgis-user] Issues by using a script inside the python console

I use succesfully the following in a script and a plugin:

         # Voronoing ONLY the selected
         # NOTE: the colon (:) behind 'memory' in the 'OUTPUT' param is mandatory,
         # else QGIS will create a geopackage!
         selected = True
         params = {
             'INPUT': QgsProcessingFeatureSourceDefinition(point_layer.id(), selectedFeaturesOnly=selected),
             'OUTPUT': 'memory:',
             'BUFFER': 5,
         }
         result = processing.run("qgis:voronoipolygons", params)

Maybe you can use that to reconstruct your call?

Regards,

Richard Duivenvoorde


On 9/13/22 10:52, Hesels, Marie-Christine via Qgis-user wrote:
> Hi all,
>
>
> I am currently using the "Snap to Roads" script inside my qgis environment, to match gpx-points to the OSM (https://spatialthoughts.com/2020/02/22/snap-to-roads-qgis-and-osrm/ <https://spatialthoughts.com/2020/02/22/snap-to-roads-qgis-and-osrm/>).
>
> I am able to execute the Script by using the QGIS Script Environment:
>
>
>
> Unfortunatly, I would like to run the script via python console inside QGiS, but this doesn't work at all ...
>
>
> By executing the following command:
>
>
> layer_SnappedLine = processing.run("script:snap_to_roads",
> {'INPUT':layer_GPX_Points['OUTPUT'],
> 'SERVICE':'http://127.0.0.1:5000',
> 'TOLERANCE':10,
> 'OUTPUT':'TEMPORARY_OUTPUT'})
>
> I receive the error message:
>
> "Traceback (most recent call last):
>
>    File "C:\PROGRA~1\QGIS32~1.10\apps\Python39\lib\code.py", line 90, in runcode
>      exec(code, self.locals)
>    File "<input>", line 1, in <module>
>    File "C:\PROGRA~1/QGIS32~1.10/apps/qgis-ltr/./python/plugins\processing\tools\general.py", line 108, in run
>      return Processing.runAlgorithm(algOrName, parameters, onFinish, feedback, context)
>    File "C:\PROGRA~1/QGIS32~1.10/apps/qgis-ltr/./python/plugins\processing\core\Processing.py", line 205, in runAlgorithm
>      layer = context.takeResultLayer(result)  # transfer layer ownership out of context
> TypeError: QgsProcessingContext.takeResultLayer(): argument 1 has unexpected type 'QgsFeatureSink'"
>
> Can anybody help me with this issue? I am using QGIS Version 3.22.10
>
> Regards and thanks,
> Marie
>
>
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