Hi Again,
I have now managed to check QGIS tracking, and couldn't find any similar
issues.
I can't be sure about the bit in red strikethrough below, so ignore that
part.
Regards,
Zoltan
On 2015/01/26 09:08, Zoltan Szecsei wrote:
Hi Guys,
I tried to go to QGIS issue tracking, but was told that the "site was
under heavy load", so haven't checked if this is a known issue.
Platform is Ubuntu 14.10 with self-compiled QGIS 1614ac8.
Scenario:
I have a shape file with some 700K points, and a raster image covering
about 10 of these points.
I want to delete all except these 10 points.
Try #1
I select my 10 points, open the attribute table and click invert
selection.
I then click the red bin (delete selected) and wait (I left it
going overnight)
The next morning I killed the task and when I re-opened the point
file, my 10 points were deleted and the rest were still there.
Clue: I might have clicked delete selected before the 'invert
selection' had finished. This would be due to the fact that I may
not have seen (if any) indication that the invert selection task
had completed.
Try #2
I zoom to the extents of the point file, turn off rendering of the
point file, turn on editing in the point file.
I then select (invisible) features from this point file in a large
rectangle above my visible raster image.
After a few second I get no indication that anything is selected,
and the 'delete selected' icon remains grey.
I turn on rendering for the point shape file, and those that were
in my rectangle are rendered in yellow (ie: 'selected')
I open the attribute table and the 'delete selected' icon IS red,
and I can move my selection to the top.
I then delete the selection from the attribute table as the icon
on the toolbar is still not 'available'.
After 10 minutes or more, I get tired of waiting and kill the job.
Try #3
I re-open the point file, leave rendering on, select the same
points as in try #2 above, and click 'delete selected'.
After 2-3 minutes or so, the selected points are deleted as expected.
So, I've raised a few issues here, but they seem to be centred on the
attribute table being open.
Regards,
Zoltan
--
===
Zoltan Szecsei PrGISc [PGP0031]
Geograph (Pty) Ltd.
GIS and Photogrammetric Services
P.O. Box 7, Muizenberg 7950, South Africa.
Mobile: +27-83-6004028
Fax:+27-86-6115323 www.geograph.co.za
===
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