Fit Random Forest Classifier cannot be used in model builder

[Benjamin Jakimow]

To create a RFC model I want to combine the training steps in a QGIS model using the QGIS Model Builder.

However, it seems impossible to use the “Create classification dataset” output as input of the Fit Random Forest Classifier algorithm:

The common options to define algorithm inputs based on a static value, model inputs or algorithm outputs are missing.

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[Andreas Rabe]

Interesting.

I thought that this button would be provided by the Processing Framework, but it’s not.

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[Andreas Rabe]

In case of the Modeler, I would need to return the original InputFile-Widget here:

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[Andreas Rabe]

Code would look like this:

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But I have no idea, how to create the original widget:

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@Benjamin Jakimow do you have any idea?

[Andreas Rabe]

It seams to be impossible to have a custom widget, that behaves like a normal widget inside the modeler.

I now implemented two versions of the Fit RFC algorithm, the normal one with the custom widget, and a special version for the modeler without the custom widget:

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@Benjamin Jakimow please try it out. If we like it, I will do this for all algorithms that are using custom widgets.

[Andreas Janz]

resolves #1366

→ <<cset af2ef69c309d>>

[Fabian Thiel]

related to #1387 ?

[Andreas Rabe]

yes

[Andreas Rabe]

Issue #1387 was marked as a duplicate of this issue.