Hi Richard, thank you for your response, you may have already given me a good hint. QGIS is started from another app with an empty/no project, and the default CRS is in effect (WGS84 here). My layers are in epsg:2169 (Luxembourg), so I definitely need to correct this. Since all layers are in 2169, I could set the project's CRS in the plugin ... But here are the extents, grabbed from the console
georecord_layer extent: <QgsRectangle: 79099.45521477346483152 74612.53163364417559933, 79127.02656594294239767 74638.46575664929696359> mapCanvas extent: <QgsRectangle: -15656.28378378378693014 53925, 170656.28378378378693014 141075> When I run setExtent in the console, it works ... iface.mapCanvas().setExtent(plugin.georecord_layer.layer.extent()) I did set the QGIS default CRS to 2169 in the options, but this did not help unfortunately. Many thanks, Frank -----Ursprüngliche Nachricht----- Von: Richard Duivenvoorde <rdmaili...@duif.net> Gesendet: Dienstag, 20. Juni 2023 13:37 An: Frank Broniewski <broniew...@a-a.lu>; qgis-developer@lists.osgeo.org Betreff: Re: [QGIS-Developer] PyQGIS zoom to layer not working Hi Frank, It really depends on: - what is the crs of your project - what is the crs of your layer - if they match, it should work - if they do not match you have to reproject the layer extent to the crs of the mapcanvas I think the python console will be helpfull here. While loaded, does the plugin have a handle to the actual QGIS layer? If so, say it is called 'self.georecord_layer.layer' in the plugin. Then you can do (in the console): # first find out the name of your plugin qgis.utils.plugins # will show you all loaded layers AND there key/name # say your plugins name is 'franks_plugin' # then plugin = qgis.utils.plugins['franks_plugin'] # will give you a handle (in the console) to your plugin # then plugin.georecord_layer.layer.extent should give you an extent... eg: <QgsRectangle: 103890.796875 492342.34375, 104287.453125 492643.46875> # NOTE that this is in the layers crs ! # you can also use (making the right layer active in legend): iface.activeLayer().extent() # you can also look at the extent of the mapcanvas from the console: iface.mapCanvas().extent() (you can off course also use logging see the extent somewhere) Can you show us both the canvas and the layer extent? Regards, Richard Duivenvoorde On 6/20/23 12:59, Frank Broniewski via QGIS-Developer wrote: > Hi, > > I am writing a plugin, in which I am loading a bunch of layers, and I want to > zoom on one of them. Layers are loaded through an action (click). > > def load_layer(self): > > self.project.addMapLayers( > > [ > > self.addresses_layer.layer, > > self.adminunits_layer.layer, > > self.georecord_layer, > > ], > > addToLegend=False, > > ) > > self.project.addMapLayers( > > [ > > self.geolocation_point_layer.layer, > > self.geolocation_line_layer.layer, > > self.geolocation_poly_layer.layer, > > self.ortho_layer > > ] > > ) > > > self.iface.mapCanvas().setExtent(self.georecord_layer.layer.extent()) > > self.iface.mapCanvas().refresh() > > but unfortunately, that does not work as expected. QGIS zooms just on the > ortho_layer in the end. I have the suspicion, that the extent I set, gets > overwritten by another layer that loads in in a later stage. Layers are from > a PostGIS, and the ortho_layer is a WMS layer. > > I tried googleing, mapCanvas().waitWhileRendering() and whatnot, it just will > not zoom. I am completely clueless now, so any hints are greatly appreciated. > > This is on OSGeo4W, QGIS 3.28 and Python , for explanation, the .layer > attribute is the actual QGIS layer … > > Many thanks, > > Frank > > > _______________________________________________ > QGIS-Developer mailing list > QGIS-Developer@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer _______________________________________________ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
