Problem with creating a model in Qgis -- select by location

Question

I have two shapefiles (polygones) - referentiebestand and oudejaren

-> the first step is to calculate the centroids of each shapefile (gives a good result), then a create a buffer around one of this shapefiles, referentiebestand (gives a good result).

But then i receive a problem: The goal is find the points that lies outside the buffer, I tried it with the tool 'Select by location' (see figure 1). But it gives nothing...

The complete model (figure 2)

If i use the tool 'select by location' outside the model, in the intergraph And choose 'new selection' it select the points, so that works well.

But when i choose 'remove selection' instead of new selection the result is empty, nothing changed...

When i try 'new selection' 'add to current selection' or 'remove selection' , nothing changed...

Answer 1

Since you want to save to points outside the buffers, I would recommend to use the Difference operator instead of select and then save.

Of course it's still interesting to check if select by location works correctly in models but it's not necessary for this use case I think.

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Update:

Try setting the input of Save selected features to be the output of the buffering operation.

If I interpret the behavior correctly, the output of select by location makes no sense since it does not actually contain the selected features.

I've tried to fix the script: https://github.com/qgis/QGIS/pull/1921