Questions tagged [pyqgis]
Python bindings for QGIS.
7,889 questions
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Override default keyboard shortcut while QGIS plugin window is active
I'm writing a QGIS plugin that uses a QMainWindow and includes several QActions. I'd like to trigger those actions via keyboard shortcuts, but only when the QMainWindow is active.
The shortcuts I'm ...
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QGIS plugin development: setting up QgsLayerItems with WMTS
I am in the process of developing a QGIS plugin that makes use of QgsLayerItem objects in the browser to provide a list of WMTS data sources.
These WMTS sources are expected to be from a variety of ...
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Add custom CRS in QGIS resources DB
I have a custom CRS that I want to use regardless of the profile I am currently working in.
I can add the CRS to resources/srs.db and to resources/qgis.db (and to profile/qgis.db).
A CRS added to ...
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Duplicating a layer to create a virtual field on it with PyQGIS
In a plugin I want to create a duplicate of the selected layer and add a virtual field including some symbology to it.
I've tried the following, and it appears to do the what I want (imitate the "...
- 2,758
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Correct syntax for VAR_MODEL in sagang:kriging via PyQGIS
I am writing a PyQGIS script to automate interpolation using the sagang:ordinarykriging algorithm (QGIS 3.28.13, SAGA 9.2.0).
While the algorithm runs successfully with the default linear variogram ...
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Python Plugins does not work on QGIS 3.44 (Fedora Linux)
Recently I migrated from windows to Fedora (KDE Plasma Desktop 42) and I'm suffering with several issues whit python based image analises plugins. Most of them seems like to be related to a ...
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Using Python Code as tool in QGIS
I have this little Python code. I want a button or at least a tool in the toolbox which I can click so the console does not have to be open all the time.
I unterstand that saving this code as .py and ...
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Saving results in already created GeoPackage with QGIS graphical modeler script
I have a QGIS graphical model. I want to save the results in an empty GeoPackage (just with one dummy layer).
The PyQGIS script below works and creates the wanted GeoPackage beforehand, but now I want ...
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Shapefile DataSourceUri different depending on how the layer is loaded using PyQGIS
I'm using Python in conjunction with a custom form to autofill some fields. I add a vector layer to my project (via 'Add Layer' button) and then use:
print(self.dlg.SelectedLayer.currentLayer()....
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Changing QgsProcessingParameterVectorDestination output to *.shp instead of *.gpkg in QGIS Processing Algorithm
I'm updating a plugin for QGIS and struggling to see how to set the default file type when using the QgsProcessingParameterVectorDestination parameter. See code below.
self.addParameter(
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Removing rows in Layout legend with PyQGIS
I have a script that exports multiple layouts using different layers. Part of it is changing the legend depending on which layer is being printed in the layout. I'm having trouble finding a way to ...
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Catch or Suppress GDAL Error when using QgsRasterLayer in a standalone script
I am trying to get raster sublayers from fileGeodatabase using gdbLayer = QgsRasterLayer(gdbPath, "OpenFileGDB", "gdal") in a standalone pyqgis script and I am getting this error.
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Update existing WMS connection in PyQGIS
I update a list of WMS connections automatically with QgsSettings(). When the connection doesn't exist, it is well created with all good attributes. But when the connection already exists, and one ...
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Exporting aliases I/O names from vector layer attributes to GeoPackage using PyQGIS
I want to export a vector layer to GeoJSON file, but with some field aliases. Presently, I'm exporting it with fields only.
fields = ["field_1", "field_2"]
idxs = [layer.fields()....
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How do I debug/Run issues with code while attempting to execute TIN interpolation in QGIS 3.36.0
I am completing a project for my master's degree on sedimentary layers across South Wales deposited by a marine transgression event at the end Triassic. For the project, we're attempting to generate ...
