QgsApplication.processingRegistry().algorithms() does not
list grass7:v.to.rast.value (but grass7:v.to.rast is
there).
In QGIS 3, the following seems to work:
myres = processing.run("qgis:union", {'INPUT': "my_input", 'OVERLAY':
"my_overlay", 'OUTPUT': "my_result"}, feedback=None)['OUTPUT']
processing.algorithmHelp("qgis:union") describes the
parameters of the algorithm.
Parameter names are case sensitive (at least on Ubuntu).
Håvard
On 21. mars 2018 17:46, Stephen Bosch wrote:
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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--
Håvard Tveite
Faculty of Science and Technology, NMBU
Drøbakveien 31, POBox 5003, N-1432 Ås, NORWAY
Phone: +47 67231548 Web: http://www.nmbu.no
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