QGIS » QGIS Application

Please test with 2.8.4 or 2.12.1

Release 2.12.1 segfaults immediately at start up. This has to do with python plugins, because it starts up if the package python-qgis is removed. Release 2.8.4 is not in the repositories, at least neither in http://qgis.org/ubuntugis nor in http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu/.

Thanks for the advice to add the LTR repository. The bug also affects 2.8.4. It does not occur on every deletion though, the steps had to be repeated a couple of times until Qgis crashed. Qgis becomes also relatively slow when activating the node tool, as it automatically starts a background validation. Note that the dataset has some crossing lines due to the downsampling, but this should not make Qgis crash.

dpkg -l qgis
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                                     Version                   Architecture              Description
+++-========================================-=========================-=========================-=====================================================================================
ii  qgis                                     1:2.8.4+20trusty-ubuntugi amd64                     Geographic Information System (GIS)

Karl Kastner wrote:

There is no dbf, as there are no attributes. This is a Matlab export. Matlab does not create a dbf if there are no attributes.

weird, but anyway I confirm the issue, at least on 2.8.4 on ubuntu 14.04.

Hello!
I would like to confirm this bug.
I am on Windows Vista 32bits Ultimate, QGIS 2.12.1 Lyon, standalone installer.
I am working on a small shapefile with some 300 points.
While editing the shapefile, mainly deleting points or moving them, qgis starts to
slow down and in the end freezes.
I tried to open the shp file outside of current project and I easily recreated the bug.
1. select one point
2. delete it
repeat 11 times and qgis freezes (not responding), but after some time
refreshes and I can delete another point, after 14 repetitions qgis doesn't recover
and I have to kill it from Windows Task Manager.
Enclosing shapefile.

seems fixed to me at least on 2.14.3, please reopen if necessary

Tested in 2.14.3 on the Canada provinces and the results are horrible.

If i delete less then 10-20 nodes at a time it takes around 1-2 seconds.

If i select around 100-1000 nodes, it can take up to 10 minutes.

You can download the file from here https://www.dropbox.com/s/j5i1m1tt2cam1qy/canada_states.zip?dl=0

Here it`s a youtube video showing the selection https://youtu.be/tV7VOK4YAZE

baditaflorin - wrote:

Tested in 2.14.3 on the Canada provinces and the results are horrible.

If i delete less then 10-20 nodes at a time it takes around 1-2 seconds.

If i select around 100-1000 nodes, it can take up to 10 minutes.

You can download the file from here https://www.dropbox.com/s/j5i1m1tt2cam1qy/canada_states.zip?dl=0

Here it`s a youtube video showing the selection https://youtu.be/tV7VOK4YAZE

the original report/issue is solved, there is no more leak if you the node tool.
So in this cases please file a different ticket.
Anyway I tested you dataset on both 2.18.4 and master (qgis3) on both Windows and Linux and is not that slow removing nodes when you selected a lot of them. Is not lighting fast, but it takes a few seconds when you have selected a reasonable large amount. Please try with the latest releases and in case file a new ticket.