Is there a way of actually just loading a known set of files using the processing script function in QGIS 3.x? For my task, it isn't simply a matter of saving a QGIS file and starting up from where I left off. Every day (actually twice a day) with QGIS 2.x I would run my start-up script which would grab our climate model data off the FTP server, convert the model output files into GeoTIFFs, load those onto a basemap, then grab a point file that contained observed meteorological data with which I could create a nudging layer to assimilate into the climate model.
My QGIS 2.x script dialogue box had two entries, one for the beginning date-time of the model run and another for entering the ending-time. Trying to grok the new 3.x method of processing scripts, it seems like I'll have to create a dialogue box entry in the initAlgorithm() function for every single file I want loaded onto my map document. Then I have to pipe each QgsRasterLayer and QgsVectorLayer into a feature sink? Is that correct or is there a method of simply loading the files? QgsProject.instance().addMapLayers([xxx,xxx.xxx]) does nothing when the script I'm working on runs. The only thing I've managed to load so far is a vector file, but only by feeding each feature of the vector into QgsFeatureSink. That's fine for classroom vectors, but when you start dealing with millions of polylines or points, that seems like an additional slow down. Of all the good that QGIS 3 brings OSGEO, this seems like a really big step back into user friendliness and clean code. Although, if I'm completely off base, I will gladly take that back.
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