[Qgis-user] Using processing algorithms from the console in QGIS 3.0

[Stefan Giese (WhereGroup)]

Hi Stephen,
I asked a similar question at gis.stackexchange.com 
(https://gis.stackexchange.com/questions/274144/passing-input-output-parameters-to-processing-scripts-using-qgis-3) 
and I think we have to be patient. The documentation is work in 
progress. I am sure processing tools will work like a charm, when we 
will know how to use it;-)

Best
stefan

---
Mit freundlichen Grüßen
Stefan Giese
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Am 2018-03-21 17:46, schrieb Stephen Bosch:
> Hello,
> 
> I am running QGIS 3.0.0 in Linux.
> 
> I'm trying to migrate some pyqgis code from 2.14 to 3.0 and
> discovering the hard way that just about everything has changed :)
> 
> (Unfortunately, the docs haven't been updated yet and the API docs are
> pretty sparse.)
> 
> Say I have this command, which worked in 2.x:
> 
> file_grid_r = processing.runalg("grass7:v.to.rast.value", grid_v, 0,
> 1, extent, 0.008333, -1, 0.000100, None)['output']
> 
> processing.runalg() doesn't exist anymore, apparently it was replaced
> with processing.run(). However, this:
> 
> file_grid_r = processing.run("grass7:v.to.rast.value", grid_v, 0, 1,
> extent, 0.008333, -1, 0.000100, None)['output']
> 
> does not work as expected. In the PyCharm debugger, I receive this
> error message:
> 
> sys:1: ResourceWarning: unclosed <socket.socket fd=3,
> family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0,
> laddr=('127.0.0.1', 50386), raddr=('127.0.0.1', 40183)>
> 
> (If the command syntax is in fact correct, then perhaps the algorithm
> is not accessible?)
> 
> My questions:
> 
> 	* Is there up-to-date console documentation for the Processing
> toolbox somewhere?
> 	* How can I get a listing of the available algorithms in the same
> format as in 2.x?
> 	* How do I convert the algorithm calls (processing.runalg) from 2.x
> to 3.x?
> 
> Thanks
> 
> Stephen
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