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Rev

Sounds like the solution I was looking for, but I don't get it working (unfortunately I have no python experience): I tried to run it with python console: no error, no result and as Action: "unable to run command". I only changed the expression for testing from 'a + b' to '1 +2'. Using QGIS 3.14, Layer: GPKG. Could you please give more details for using this code?

MartinMap
– MartinMap

2020-10-11 07:37:06 +00:00
Commented Oct 11, 2020 at 7:37
I added some instructions in the main post.

Leon Powałka
– Leon Powałka

2020-10-11 11:16:20 +00:00
Commented Oct 11, 2020 at 11:16
Try running it as a script, not in console and remember to replace a, b and c in code with proper field names

Leon Powałka
– Leon Powałka

2020-10-11 11:18:58 +00:00
Commented Oct 11, 2020 at 11:18
2

I edited the code in accordance with Matthias's comment. The layer is chosen beforehand, instead of using iface.activeLayer()

Leon Powałka
– Leon Powałka

2020-10-12 06:48:37 +00:00
Commented Oct 12, 2020 at 6:48
1

Thanks. Please disregard the stability comment, this only applies if it's an expression function and not the implementation here. All good.

Matthias Kuhn
– Matthias Kuhn

2020-10-12 08:56:29 +00:00
Commented Oct 12, 2020 at 8:56

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