That is a very useful idea. I have also wanted to request something similar
for a summary of the features displayed in an area (like describe feature
type but more focused on the data values - like a histogram). I just run
into an internal project here where a developer had made a WFS "harvester"
inorder to produce similar information (so he could generate a decent SLD).
Jody
On Thu, Feb 19, 2009 at 7:38 PM, Andrea Aime <[email protected]> wrote:
> Hi,
> there is a user on the ml asking about how he could get
> the extents of the features rendered by a GetMap with a filter.
> The answer is that this is not trivial, because the filter
> would have to be matched with the eventual filter embedded
> in the SLD, with the scale related rules, and so on.
> Long story short, only the WMS knows what was actually rendered.
>
> I was wondering about a WMS output format that instead of
> depicting a map, describes it. An xml document containing
> the layer names, the feature count and bounds for each layer,
> maybe a link to the SLD that was used for a specific layer,
> the extra filter applied, the current scale.
>
> Could be useful for this common use case (which will stay
> common until WFS can really be used in anger to draw many
> features in a browser), and also could be useful for debugging
> (as the client and the server don't usually compute the
> same scale, or to realize you are not using the style you
> thought you were using, or to see a filter is not doing
> what you intended it to do).
>
> Opinions?
> Cheers
> Andrea
>
> --
> Andrea Aime
> OpenGeo - http://opengeo.org
> Expert service straight from the developers.
>
>
> ------------------------------------------------------------------------------
> Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco,
> CA
> -OSBC tackles the biggest issue in open source: Open Sourcing the
> Enterprise
> -Strategies to boost innovation and cut costs with open source
> participation
> -Receive a $600 discount off the registration fee with the source code:
> SFAD
> http://p.sf.net/sfu/XcvMzF8H
> _______________________________________________
> Geoserver-devel mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/geoserver-devel
>
------------------------------------------------------------------------------
Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA
-OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise
-Strategies to boost innovation and cut costs with open source participation
-Receive a $600 discount off the registration fee with the source code: SFAD
http://p.sf.net/sfu/XcvMzF8H
_______________________________________________
Geoserver-devel mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/geoserver-devel
