Hi all, I'm trying to get the file path for an input layer (which is a csv) in a script in QGIS 3. I can see from the algorithm history that it is there in the parameters (see below). However, it seems that when I use `parameterAsFile`, it always returns an empty string. Is this a bug, or am I using it incorrectly?
What I am looking for is a way to programatically access " C:/GIS/Projects/LizeSuitableHabitatModel/dummySpecies.txt". Thanks, Rudi *Algorithm history:* processing.run("script:suitablehabitatmodel", {'SPECIES_LIST':'file:///C:/GIS/Projects/LizeSuitableHabitatModel/dummySpecies.txt?type=csv&geomType=none&subsetIndex=no&watchFile=no','SPECIES_POINTS':'file:///C:/GIS/Projects/LizeSuitableHabitatModel/dummyPoints.txt?type=csv&xField=DDE&yField=DDS&crs=EPSG:4326&spatialIndex=yes&subsetIndex=no&watchFile=no','MODEL_CRS':'USER:100000','SPECIES_REPROJECT':'C:/Users/rudi_000/AppData/Local/Temp/processing_41d6b6ec7dd342f1bfd813b4b1c79dba/e89a5f992eb94e2291281d57f796e1b0/SPECIES_REPROJECT.shp'}) *Summarised script:* def initAlgorithm(self, config=None): self.addParameter( QgsProcessingParameterFeatureSource( self.SPECIES_POINTS, self.tr('Species points'), [QgsProcessing.TypeVectorPoint] ) ) def processAlgorithm(self, parameters, context, feedback): speciesPointsFile = self.parameterAsFile(parameters, self.SPECIES_POINTS, context) # always returns an empty string genspec = '1031-125' # this would be set in a loop # trying to apply a filter to the input file by changing the subset parameter uri = f"file:///{speciesPointsFile}?type=csv&xField=DDE&yField=DDS&crs=EPSG:4326&spatialIndex=yes&subsetIndex=no&watchFile=no&subset=%22Genspec%22%20%3D%20\'{genspec}\'" filteredLayer = QgsVectorLayer(uri, 'FILTERED_POINTS', 'delimitedtext') pointsReprojected = processing.run("native:reprojectlayer", { 'INPUT': filteredLayer, 'TARGET_CRS': modelCrs.authid(), 'OUTPUT' : speciesReprojectOutput }, context=context, feedback=feedback)['OUTPUT']
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