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Hi Guys,<br>
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.<br>
<br>
Platform is Ubuntu 14.10 with self-compiled QGIS 1614ac8.<br>
<br>
Scenario:<br>
I have a shape file with some 700K points, and a raster image
covering about 10 of these points.<br>
I want to delete all except these 10 points.<br>
<br>
Try #1<br>
<blockquote>I select my 10 points, open the attribute table and
click invert selection.<br>
I then click the red bin (delete selected) and wait (I left it
going overnight)<br>
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.<br>
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.<br>
</blockquote>
Try #2<br>
<blockquote>I zoom to the extents of the point file, turn off
rendering of the point file, turn on editing in the point file.<br>
I then select (invisible) features from this point file in a large
rectangle above my visible raster image.<br>
After a few second I get no indication that anything is selected,
and the 'delete selected' icon remains grey.<br>
I turn on rendering for the point shape file, and those that were
in my rectangle are rendered in yellow (ie: 'selected')<br>
I open the attribute table and the 'delete selected' icon IS red,
and I can move my selection to the top.<br>
I then delete the selection from the attribute table as the icon
on the toolbar is still not 'available'.<br>
After 10 minutes or more, I get tired of waiting and kill the job.<br>
</blockquote>
Try #3<br>
<blockquote>I re-open the point file, leave rendering on, select the
same points as in try #2 above, and click 'delete selected'.<br>
After 2-3 minutes or so, the selected points are deleted as
expected.<br>
</blockquote>
So, I've raised a few issues here, but they seem to be centred on
the attribute table being open.<br>
<br>
Regards,<br>
Zoltan<br>
<br>
<br>
<pre class="moz-signature" cols="72">--
===========================================
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 <a class="moz-txt-link-abbreviated" href="http://www.geograph.co.za">www.geograph.co.za</a>
===========================================</pre>
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