[Qgis-developer] Changing the Filter of an existing layer

[Andreas Neumann]

 Thanks Anita - easier than I thought.

 Apparently one has to refresh the canvas after setting the 
 subsetString.

 Is that how you do it in Time Manager?

 Thanks,
 Andreas

 On Wed, 20 Jun 2012 17:04:49 +0200, Anita Graser wrote:
> Hi Andreas,
>
> layer.setSubsetString( subsetString ) seems the way to go. At least
> that's what I use in Time Manager ;)
>
> Best wishes,
>
> Anita
>
> On Wed, Jun 20, 2012 at 4:49 PM, Andreas Neumann  wrote:
>
>> Hi,
>>
>> For an existing layer I would like to add/change/remove the WHERE
>> filter by script - the same that one would normally set by the query
>> builder.
>>
>> Do I need to change the QgsDataSourceURI() of that QgsVectorLayer
>> and then reload it or is there an easier/more elegant way to change
>> the filter of an existing layer?
>>
>> Thanks if you have any ideas or even sample code on how to achieve
>> this.
>>
>> Andreas
>>
>> --
>> --
>> Andreas Neumann
>> Böschacherstrasse 10A
>> 8624 Grüt (Gossau ZH)
>> Switzerland
>> _______________________________________________
>> Qgis-developer mailing list
>> Qgis-developer at lists.osgeo.org [1]
>> http://lists.osgeo.org/mailman/listinfo/qgis-developer [2]
>
>
>
> Links:
> ------
> [1] mailto:Qgis-developer at lists.osgeo.org
> [2] http://lists.osgeo.org/mailman/listinfo/qgis-developer
> [3] mailto:a.neumann at carto.net

-- 
 --
 Andreas Neumann
 Böschacherstrasse 10A
 8624 Grüt (Gossau ZH)
 Switzerland