Map canvas overlay layers QGIS

[المشرف العام]

I built my own map canvas inside a plugin in QGIS and I want to add two layers (one by one) in order to overlay the two. I have this code:

fileCI = "....\plugins\teste\test.shp"fileInfo = QFileInfo(fileCI)layer = QgsVectorLayer(fileCI, fileInfo.baseName(), "ogr")if not layer.isValid(): returnif self.canvas.layerCount()==0: # add layer to the registry QgsMapLayerRegistry.instance().addMapLayer(layer, False) # set extent to the extent of our layer self.canvas.setExtent(layer.extent()) # set the map canvas layer set self.canvas.setLayerSet([QgsMapCanvasLayer(layer)]) self.canvas.setVisible(True) else: layers = self.canvas.layers() layers.insert(1,layer) # add layer to the registry QgsMapLayerRegistry.instance().addMapLayers(layers,False) for i in range(0,self.canvas.layerCount()+1): self.canvas.setLayerSet([QgsMapCanvasLayer(layers)]) self.canvas.setVisible(True) for lay in layers: lay.triggerRepaint() But when I add the first vector file, ok, when I add the second the map canvas stay empty. How do I do to overlay the two layers?

Thanks.



أكثر...