[Qgis-user] Clipping tool takes a lot of time

[Mike Flannigan]

I am also using QGIS 2.4 64b Chugiak on Windows 7.
The same thing happens to me.  Even when I create
a line layer with only 11 lines and try to clip 3
of them with a polygon layer, the progress bar just
goes back and forth for ever.

I didn't run it for hours to see what would eventually
happen.

Mike


I might be doing something wrong.

On 10/13/2014 8:02 AM, qgis-user-request at lists.osgeo.org wrote:
> Hi,
> I am trying to clip a road network by a polygon in a script using the
> algorithm 'qgis:clip'. The result seems to be quite ok but it takes an
> incredible long time to produce, about 14 hours (!). The road network
> shapefile consists of about 5000 features (not very many, I believe) and
> the clipping shapefile consists of one single polygon. When using Vector =>
> Geoprocessing Tools => Clip from the QGIS menu, the time required is about
> the same. Does anyone have a clue why it takes so long time? Are there
> other clip tools that I may try? I?ve been looking at the 'gdalogr:ogr2ogr'
> algorithm and its clipsrc function but not got it to work properly yet. I?m
> using QGIS 2.4 Chugiak on Windows 7 with 2.5 GHz processor. Thankful for
> all hints that may help,
> /Jonas