[Qgis-user] Clipping a QgsVectorLayer object of type LineString with a QgsVectorLayer object of type Polygon

[Tudorache, Marian]

Hi,

I have tried to run clipping processing algorithm and it fails.
First version:
srs = qgis.core.QgsCoordinateReferenceSystem(4019, qgis.core. QgsCoordinateReferenceSystem.EpsgCrsId)

#Input Layer
inputLayer = qgis.core.QgsVectorLayer(shapeFileLocation + “/inputLineString.shp”, “inputLineString”, “ogr”)
inputLayer.setCrs(srs)
Clipping Layer:
clipLayer = qgis.core.QgsVectorLayer(“Polygon?crs={0}”.format(srs.authid())
#algorithm to add a clipping polygon feature
#the algorithm works because I tested with clipLayer.getFeatures() and I was able to extract the geometry and points
…..
….
#calling processing algorithm.
processing.runalg(‘qgis.clip’, inputLayer, clipLayer, “output.shp”)

The error:
Unable to execute algorithm
Wrong parameter value: Polygon?crs=ESPG:4019

Any idea why is not working?

Thank you,
Marian

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