Hi Rudi,
thanks a lot for your answer, I will definitely try that out. And once I’ve done it I will post my insights for future reference. I tried the QgsProcessingParameterVectorDestination already, but > Finally, in your `params` dict, change the value for OUTPUT from `memory:` to > `output` This is really new to me. Where did you find that? I really searched the docs up and down and gis.stackexchange as well, but never came across an output output for the output 😃 Many thanks, Frank Von: Rudi von Staden <rud...@gmail.com> Gesendet: Sonntag, 1. Juli 2018 15:56 An: Frank Broniewski <ha...@frankbroniewski.com> Cc: qgis-user <qgis-user@lists.osgeo.org> Betreff: Re: [Qgis-user] QGIS 3 Processing question Hi Frank, On Fri, 29 Jun 2018 at 09:35, Frank Broniewski <ha...@frankbroniewski.com <mailto:ha...@frankbroniewski.com> > wrote: Anyway, my testing-algorithm-script is still not working. It runs through, but I do not get the expected result loaded into the layer tree. I suppose it runs through - the output from the 'qgis:pointsalonglines' is a QgsVectorLayer - but after finishing I get nuthink back. I had a similar problem. I think it's because the template defines the output as a feature sink, so you assume you have to use the same. I think if you change your definition from: self.addParameter( QgsProcessingParameterFeatureSink( self.OUTPUT, <http://self.tr/> self.tr('Center line') ) ) to: self.addParameter( QgsProcessingParameterVectorDestination( self.OUTPUT, self.tr <http://self.tr> ('Center line') ) ) and then in processAlgorithm you need to add output as a layer you can work with: output = self.parameterAsOutputLayer(parameters,self.OUTPUT,context) Finally, in your `params` dict, change the value for OUTPUT from `memory:` to `output`. The new syntax is more complicated than it used to be, and it takes some time to wrap your head around it. I do find that it gets easier once you've got a couple of scripts under your belt. Rudi
smime.p7s
Description: S/MIME cryptographic signature
_______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
