Union tool creates shapefile with missing polygons

[qgib]

Author Name: Andrew Joseph (Andrew Joseph)
Original Redmine Issue: 4368

Redmine category:processing/qgis

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When unioning shapefiles in QGIS, the process gets to about 6% and finishes, leaving a layer that is unioned correctly but has missing polygons. I have tested this with multiple files and it fails each time, it does not appear to be a coordinate system issue. When it did not work in 1.7.1 I installed 1.6.0 and tried the same process, which yielded the same error. Moreover, all other geoprocessing ftools work correctly, so it appears to be an issue with this particular tool.

I have tried installing as an administrator, as I understand that not doing so often causes problems, but that solves nothing.

Whatever the problem is it leads to data corruption, so I consider it a high priority fix.

[qgib]

Author Name: Paolo Cavallini (@pcav)

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Duplicate of #13641. Please check carefully before opening a ticket

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• resolution was changed from to duplicate
• status_id was changed from Open to Rejected

[qgib]

Author Name: Paolo Cavallini (@pcav)

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• status_id was changed from Rejected to Closed

[qgib]

Author Name: Giovanni Manghi (@gioman)

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The "ftools" category is being removed from the tracker, changing the category of this ticket to "Processing/QGIS" to not leave the category orphaned.