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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Hi Rudi,<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='mso-fareast-language:EN-US'>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 </span>QgsProcessingParameterVectorDestination already, but <o:p></o:p></p><p class=MsoNormal><span lang=EN-GB style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:18.0pt'><span lang=EN-GB>> Finally, in your `params` dict, change the value for OUTPUT from `memory:` to `output`</span><span lang=EN-GB style='mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='mso-fareast-language:EN-US'>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 </span><span lang=EN-GB style='font-family:"Segoe UI Emoji",sans-serif;mso-fareast-language:EN-US'>😃</span><span lang=EN-GB style='mso-fareast-language:EN-US'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='mso-fareast-language:EN-US'>Many thanks,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='mso-fareast-language:EN-US'>Frank<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><b>Von:</b> Rudi von Staden <rudivs@gmail.com> <br><b>Gesendet:</b> Sonntag, 1. Juli 2018 15:56<br><b>An:</b> Frank Broniewski <hallo@frankbroniewski.com><br><b>Cc:</b> qgis-user <qgis-user@lists.osgeo.org><br><b>Betreff:</b> Re: [Qgis-user] QGIS 3 Processing question<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hi Frank,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>On Fri, 29 Jun 2018 at 09:35, Frank Broniewski <<a href="mailto:hallo@frankbroniewski.com">hallo@frankbroniewski.com</a>> wrote:<o:p></o:p></p></div><div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><p class=MsoNormal style='margin-bottom:12.0pt'>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.<o:p></o:p></p></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal>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:<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><blockquote style='margin-left:30.0pt;margin-right:0cm;text-decoration-style:initial;text-decoration-color:initial'><div><p class=MsoNormal><span class=gmail-im><span style='color:#500050;background:white'>self.addParameter(</span></span><o:p></o:p></p></div><div><p class=MsoNormal><span class=gmail-im><span style='color:#500050;background:white'> QgsProcessingParameterFeatureSink(</span></span><o:p></o:p></p></div><div><p class=MsoNormal><span class=gmail-im><span style='color:#500050;background:white'> self.OUTPUT,</span></span><o:p></o:p></p></div><div><p class=MsoNormal><span class=gmail-im><span style='color:#500050;background:white'> <a href="http://self.tr/" target="_blank"><span style='color:#1155CC'>self.tr</span></a>('Center line')</span></span><o:p></o:p></p></div><div><p class=MsoNormal><span style='background:white'> )</span><o:p></o:p></p></div><div><p class=MsoNormal><span style='background:white'> )</span><o:p></o:p></p></div></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>to: <o:p></o:p></p></div><blockquote style='margin-left:30.0pt;margin-right:0cm;text-decoration-style:initial;text-decoration-color:initial'><div><div><p class=MsoNormal>self.addParameter(<o:p></o:p></p></div></div><div><div><p class=MsoNormal> QgsProcessingParameterVectorDestination(<o:p></o:p></p></div></div><div><div><p class=MsoNormal> self.OUTPUT,<o:p></o:p></p></div></div><div><div><p class=MsoNormal> <a href="http://self.tr">self.tr</a>('Center line')<o:p></o:p></p></div></div><div><div><p class=MsoNormal> )<o:p></o:p></p></div></div><div><div><p class=MsoNormal> )<o:p></o:p></p></div></div></blockquote><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>and then in processAlgorithm you need to add output as a layer you can work with:<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><blockquote style='margin-left:30.0pt;margin-right:0cm;text-decoration-style:initial;text-decoration-color:initial'><div><p class=MsoNormal>output = self.parameterAsOutputLayer(parameters,self.OUTPUT,context)<o:p></o:p></p></div></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Finally, in your `params` dict, change the value for OUTPUT from `memory:` to `output`.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>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.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Rudi<o:p></o:p></p></div><p class=MsoNormal> <o:p></o:p></p></div></div></div></div></body></html>