Bug report #16115
different (wrong) output of 'join attributes by location' when used in graphical modeller
| Status: | Closed | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: |  Victor Olaya | ||
| Category: | Processing/Modeller | ||
| Affected QGIS version: | 2.18.2 | Regression?: | No |
| Operating System: | windows | Easy fix?: | No |
| Pull Request or Patch supplied: | No | Resolution: | |
| Crashes QGIS or corrupts data: | No | Copied to github as #: | 24027 |
Description
It is a similar bug like #16111. When doing spatial analysis within a model it produces a wrong result. When doing it by hand it works.
The case:
I have 3 layers
- points (located along/nearby lines)
- linestrings
- polygon
1/ I make a buffer (10m) of the polygon layer
2/ I do a spatial join from points and buffered polygons (take summary of intersecting features, statistic = mean)
3/ I make a slight buffer (0,5m)of the enriched points to make sure they will overlap the corresponding line
4/ I do a spatial join from the lines with the buffered points (take summary of intersecting features, statistic = mean)
Result: all statistics have null value.
When I take the buffered points as the outcome of the model and do the spatial join with the linestrings by hand, I get the right results.
Related issues
History
#1
Updated by Pieter Brusselman almost 10 years ago
When removing unvalid geometries (by hand or implemented in the model) then it works.
But when joining by hand (without removing unvalid geometries) there is no problem.
I think the behaviour of doing it in a model or doing it by hand should be the same.
#2
Updated by Giovanni Manghi over 9 years ago
- Priority changed from High to Normal
- Status changed from Open to Feedback
Please attach sample project/data.
#3
Updated by Alexander Bruy over 9 years ago
- Status changed from Feedback to Closed
Closed for the lack of feedback. Please reopen if necessary.