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Results tagged with pyqgis
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user 197647
Python bindings for QGIS.
5
votes
2
answers
416
views
Getting the value of OSM tag contained in the 'other_tag' field using PyQGIS
I got my data from OSM and a lot of metadata is stored in field "other_tags", which is in itself an HSTORE key/value field. For instance, my "other_tags" contains a key voltage with value "150000" as …
- 533
1
vote
1
answer
350
views
Creating QgsFeatureSink without using parameterAsSink
I know I can create a (QgsFeatureSink, string) tuple by calling
(sink, dest_id) = self.parameterAsSink(...)
However that requires me to pass an output layer as a parameter:
self.addParameter(
Qgs …
- 533
2
votes
Accepted
Creating QgsFeatureSink without using parameterAsSink
As per Ben's suggestion, you can use createFeatureSink as a drop-in replacement. The only thing to be aware of, is to use memory: as destination URI. Something that seems to be missing from the offici …
- 533
0
votes
Accepted
PyQGIS outside GUI: module 'qgis.processing' has no attribute 'run'
This answer is posted here:
Looking for manual on how to properly setup standalone PyQGIS without GUI
At the time of writing I didn't know the two were related. …
- 533
4
votes
2
answers
234
views
Rename layer after gdal:rasterize
I rasterized a layer using gdal:rasterize like this:
raster = processing.run(
"gdal:rasterize",
{...},
is_child_algorithm=True,
context=context,
feedback=feedback
)
But gdal:raste …
- 533
5
votes
2
answers
3k
views
PyQGIS outside GUI: module 'qgis.processing' has no attribute 'run'
When trying to use processing.run() from a standalone (no GUI) mode, I get the following error:
module 'qgis.processing' has no attribute 'run'
in the following trivial example:
from qgis import pro …
- 533
3
votes
1
answer
367
views
PyQGIS custom application: no GUI appearing
I'm following the following instructions on getting Python to work with QGIS, outside the QGIS GUI itself: Using PyQGIS in custom applications. …
- 533
8
votes
1
answer
660
views
Getting QgsVectorLayer from QgsFeatureSink
I have created a feature sink like so:
(sink, dest_id) = self.parameterAsSink(...)
And added a number of features to it. When I'm done processing, I want to post-process this layer using gdal:rasteri …
- 533
4
votes
2
answers
3k
views
Looking for manual on how to properly setup standalone PyQGIS without GUI
My goal is to create a standalone PyQGIS script that is able to run QgsProcessingAlgorithm scripts without GUI. My setup runs on Windows and my IDE of choice is VS Code. …
- 533
2
votes
Accepted
Looking for manual on how to properly setup standalone PyQGIS without GUI
And to ensure future versions of me, and other people who would love to not go through all these loops and hoops and instantly test their scripts in PyQGIS without GUI, I've created a GitHub repository … with a simple example.
https://github.com/MarByteBeep/pyqgis-standalone
It doesn't rely on a batch file to launch VS Code and I modified the settings in such a way that it would be relatively easy to …
- 533
1
vote
How to setup Visual Studio Code (Windows) for PyQGIS 2 or 3?
Since it's 2022 now and some things that were mentioned here have changed, I decided to create a repository with a test example here:
https://github.com/MarByteBeep/pyqgis-standalone
The full explanation … can be found here:
Looking for manual on how to properly setup standalone PyQGIS without GUI …
- 533