Howdy!
Trying to debug some issues with the QGIS GML Application Schema Toolbox
plugin
(https://github.com/BRGM/gml_application_schema_toolbox/issues/263) I
realised that I have no idea how to specify a specific driver to be used
by GDAL/OGR when running a tool via Processing? Or if it is even
possible at all. GDAL/OGR calls them prefixes to the connection string,
e.g. https://gdal.org/drivers/vector/gmlas.html#opening-syntax
E. g. this would use whatever driver GDAL/OGR decides to use for the GML
file and works:
processing.run("gdal:convertformat",
{'INPUT':'/tmp/tmpssu67zi9.gml','OUTPUT':'/tmp/test.shp'})
But I need to make it use its GMLAS driver. Trying to add the prefix
results in a crash because of the file not being found:
processing.run("gdal:convertformat",
{'INPUT':'GMLAS:/tmp/tmpssu67zi9.gml','OUTPUT':'/tmp/test2.shp'})
Traceback (most recent call last):
File "/usr/lib/python3.10/code.py", line 90, in runcode
exec(code, self.locals)
File "<input>", line 1, in <module>
File
"/usr/share/qgis/python/plugins/processing/tools/general.py", line 108,
in run
return Processing.runAlgorithm(algOrName, parameters, onFinish,
feedback, context)
File
"/usr/share/qgis/python/plugins/processing/core/Processing.py", line
181, in runAlgorithm
raise QgsProcessingException(msg)
_core.QgsProcessingException: Unable to execute algorithm
Could not load source layer for INPUT: GMLAS:/tmp/tmpssu67zi9.gml
not found
For this specific tool, the docs say that INPUT shall be "[vector: any]"
but passing simple paths works fine in pretty much all processing tools.
https://docs.qgis.org/3.28/en/docs/user_manual/processing_algs/gdal/vectorconversion.html?highlight=convertformat
Is there any way to do this?
PS: Crossposted to
https://gis.stackexchange.com/questions/451645/how-to-specify-gdal-driver-to-use-for-processing-input
Cheers, Hannes
--
Johannes Kröger / GIS-Entwickler/-Berater
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