Nice! I'll add it to the doc (and maybe even provide an example at some
point)
On Sat, Jun 2, 2012 at 1:10 AM, Andrea Aime <andrea.a...@geo-solutions.it>wrote:
> On Fri, Jun 1, 2012 at 6:08 PM, Martin Davis <mda...@opengeo.org> wrote:
>
>> If the styling parameters are controlled by feature attributes, that you
>> might be able to use Filter expressions in the parameters to compute the
>> value dynamically.
>>
>> GeoServer supports the OGC SE Recode function now, which might make this
>> easier.
>>
>
> The above all help in case the rule work on the feature attributes, but
> the case here is working
> against the scale denominator instead.
>
> Now, it would be possible to use them in case the scale denominator is
> exposed as a enviroment
> variable (env function), which is not available right now. GetMap.java has
> the following:
>
> EnvFunction.setLocalValue("wms_bbox",
> mapContent.getRenderingArea());
> EnvFunction.setLocalValue("wms_crs",
> mapContent.getRenderingArea().getCoordinateReferenceSystem());
> EnvFunction.setLocalValue("wms_srs",
> mapContent.getRequest().getSRS());
> EnvFunction.setLocalValue("wms_width", mapContent.getMapWidth());
> EnvFunction.setLocalValue("wms_height", mapContent.getMapHeight());
>
> If we added the scale denominator it would also be possible to use
> "categorize" to
> apply different values based on the current scale (categorize works
> against ranges,
> recode is a point to point map instead).
>
> Since it takes more time to write this mail than to add that line of code,
> I just did:
> http://jira.codehaus.org/browse/GEOS-5142
>
> GeoServer 2.2-beta3 will have the scale denominator available as an env
> variable
> under the wms_scale_denominator name.
>
> Cheers
> Andrea
>
>
> --
> Ing. Andrea Aime
> GeoSolutions S.A.S.
> Tech lead
>
> Via Poggio alle Viti 1187
> 55054 Massarosa (LU)
> Italy
>
> phone: +39 0584 962313
> fax: +39 0584 962313
> mob: +39 339 8844549
>
> http://www.geo-solutions.it
> http://geo-solutions.blogspot.com/
> http://www.youtube.com/user/GeoSolutionsIT
> http://www.linkedin.com/in/andreaaime
> http://twitter.com/geowolf
>
>
--
Martin Davis
OpenGeo - http://opengeo.org
Expert service straight from the developers.
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