[Qgis-user] [QGIS-Server] Can we use WMS OGC and non-OGC Filter at the same time

[Richard Duivenvoorde]

Hi Nicolas,

We are talking about WMS here isn't it?

I am not 100% sure but I think that officially WMS does not have FILTER parameters.

In SOME (combined) OGC-servers you can use them (most notably Geoserver [0]), but it is not part of the WMS spec, that only has 'simple filters'

So it really depends against which server you are talking (is it public? then we can try things out).
But IF that server works with WFS/Filter-encoding you should be able to combine those two filter in ONE, by using an 'And' clause in it.. (also part of the Filter encoding spec)

Not sure where you create that filter string though in QGIS. Is it created for you or do you add it as xml somewhere?

At least you could test combining those two in a browser?

HTH, Regards,

Richard Duivenvoorde

[0] https://docs.geoserver.org/latest/en/user/services/wms/vendor.html#filter
[1] https://www.mapserver.org/ogc/filter_encoding.html


On 9/8/20 9:15 AM, Nicolas Boisteault wrote:
> Hi all,
> 
> I have success using these two filters separately :
> 
>   * FILTER=layer_point:"label"%20=%20%27deux%27
>   * FILTER=<Filter><Intersects><PropertyName>geom</PropertyName><gml:Polygon><gml:outerBoundaryIs><gml:LinearRing><gml:coordinates%20decimal="."%20cs=","%20ts="%20">40538.991563323885,6204722.933054191%203849.2179915467277,6122782.438743888%20112695.54625448585,6094653.612338859%2040538.991563323885,6204722.933054191</gml:coordinates></gml:LinearRing></gml:outerBoundaryIs></gml:Polygon></Intersects></Filter>
> 
> First filter does not accept special characters in second. Second filter is an OGC filter.
> 
> Does someone knows if it is possible to use both filters in the same query ? Thanks.
> 
> 
> -- 
> Nicolas Boisteault
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