[Qgis-user] WFS-Plugin: several questions

Marco Hugentobler marco at hugis.net
Wed Feb 24 01:36:35 PST 2010


Hi Stephan

The WFS provider stores everything in virtual memory.

> Are there any sort of indexing of the WFS-result-dataset?

It uses a spatial index.

> Is there an option that only the features inside the BBOX of the
> mapwindow are available? Ideally when panning the resultset will be
> filled up so that already retrieved features do not fall out of the
> attribute table anymore (OK, a little like AJAX-requests...)

At the moment there is no such option.
Something that would be straightforward to add is the option to use the 
current map extent as BBOX (but this won't fill up the layer).

Regards,
Marco

Am Mittwoch, 24. Februar 2010 10.15:17 schrieb Stephan Holl:
> Dear QGIS-users,
> 
> I have some questions for the WFS_plugin in QGIS.
> 
> Where does QGIS store the retrieved GML-file, is it stored on disk or
> only in memory?
> We have a quite large WFS with parcels and QGIS tries to load _all_
> parcels at the beginning.
> 
> Are there any sort of indexing of the WFS-result-dataset?
> 
> Is there an option that only the features inside the BBOX of the
> mapwindow are available? Ideally when panning the resultset will be
> filled up so that already retrieved features do not fall out of the
> attribute table anymore (OK, a little like AJAX-requests...)
> 
> Best regards
> 
> 	Stephan
> 

-- 
Dr. Marco Hugentobler
HUGIS - GIS programming and consulting
Webereistr. 66
CH-8134 Adliswil
marco at hugis.net
http://homepage.hispeed.ch/hugis/
Technical Advisor QGIS Project Steering Committee



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