Bug report #12516

Bug with Geoprocessing Buffering

Added by Randal Hale over 6 years ago. Updated over 4 years ago.

Affected QGIS version:2.8.1 Regression?:
Operating System:Ubuntu Windows Easy fix?:
Pull Request or Patch supplied:No Resolution:
Crashes QGIS or corrupts data:No Copied to github as #:20661


Link to Data: https://drive.google.com/file/d/0B8WLtz606XDdYzFuOXZNOGNIYkE/view?usp=sharing
File: ACC_Data.zip

Projection is EPSG:2240.

If I select a few lines it buffers. If I select all the lines it buffers. If I select nothing It throws the following python error. Other less dense polyline or point features buffer with no problem. I don't believe this is a problem with the data - I've used this data before for buffering in a class.

An error has occured while executing Python code:

Traceback (most recent call last):
File "/usr/share/qgis/python/plugins/fTools/tools/doGeoprocessing.py", line 302, in run
geos, feature, match, error = self.buffering( useField )
File "/usr/share/qgis/python/plugins/fTools/tools/doGeoprocessing.py", line 449, in buffering
inGeom = QgsGeometry( inFeat.geometry() )
TypeError: arguments did not match any overloaded call:
QgsGeometry(): too many arguments
QgsGeometry(QgsGeometry): argument 1 has unexpected type 'NoneType'
Python version:
2.7.6 (default, Mar 22 2014, 23:03:41)
[GCC 4.8.2]
QGIS version:
2.8.1-Wien Wien, exported
Python path: ['/home/rjhale/.qgis2/python/plugins/processing', '/usr/share/qgis/python', u'/home/rjhale/.qgis2/python', u'/home/rjhale/.qgis2/python/plugins', '/usr/share/qgis/python/plugins', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PILcompat', '/usr/lib/python2.7/dist-packages/gst-0.10', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/pymodules/python2.7', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode', u'/home/rjhale/.qgis2//python', '/home/rjhale/.qgis2/python/plugins/DigitizingTools/tools', '/usr/share/qgis/python/plugins/fTools/tools', '/home/rjhale/.qgis2/python/plugins/mmqgis/forms']


#1 Updated by Maximilian Krambach over 6 years ago

When loading your data into grass GIS, it reports "1 feature without geometry". So I assume the data is somehow corrupt. I'm sending you the (hoepefullya corrected data (imported to grass, reexported to shapefile) via mail.

For the buffer tool, it just hangs here at 99% and never completes. (2.8.1, debian).

#2 Updated by Randal Hale over 6 years ago

  • Status changed from Open to Closed

Bad data......I thought I had checked this thoroughly.

#3 Updated by Giovanni Manghi over 4 years ago

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

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