Merge polygons

[GeoUser]

Hey!

I have two polygons (from a shape file) which share an edge, i can render each one perfectly (left image side). Now i'd like to render this 2 polygons as one polygon (right image side). Would this be possible using some special SLD filter? Or is this not possible at all.

[Andrea Aime-4]

GeoUser ha scritto:
> Hey!
>
> I have two polygons (from a shape file) which share an edge, i can render
> each one perfectly (left image side). Now i'd like to render this 2 polygons
> as one polygon (right image side). Would this be possible using some special
> SLD filter? Or is this not possible at all.
>
> http://www.nabble.com/file/p20619948/polys.png 

Not possible at all, SLD does not alter the geometric nature of the
data. If you need that, you'll have to use some other tool to merge the
polygons (postgis has merge functions for example, so you could
eventually create a view that does the merge on the fly).

Cheers
Andrea

--
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.

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[GeoUser]

I see, i was expecting something like that ;)

This seems like something that could help with the problem. What's the status of this?
docs

[Andrea Aime-4]

GeoUser ha scritto:
> I see, i was expecting something like that ;)
>
> This seems like something that could help with the problem. What's the
> status of this?
> http://geoserver.org/display/GEOS/selectDerivedFeatureType docs

As you can see the page is 3 years old. It's the first time I see
it actually, so I can assure you that thing is dead.

We're considering adding the ability to specify a query to
build a new feature type for JDBC databases, but it's not trivial
and we have no one sponsoring/working on it so it won't be done anytime
soon.

The good news is that you can buid a view in your database and then
you can treat it like any other feature type, so you don't actually
need the above.

Cheers
Andrea

--
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.

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[GeoUser]

Yes, i saw that it is 3 years old, that's why i thought that something has been done in this area. I guess i'll check out the views.

Thanks for the info Andrea!

Andrea Aime-4 wrote:

GeoUser ha scritto:
> I see, i was expecting something like that ;)
>
> This seems like something that could help with the problem. What's the
> status of this?
> http://geoserver.org/display/GEOS/selectDerivedFeatureType docs

As you can see the page is 3 years old. It's the first time I see
it actually, so I can assure you that thing is dead.

We're considering adding the ability to specify a query to
build a new feature type for JDBC databases, but it's not trivial
and we have no one sponsoring/working on it so it won't be done anytime
soon.

The good news is that you can buid a view in your database and then
you can treat it like any other feature type, so you don't actually
need the above.

Cheers
Andrea

--
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.

-------------------------------------------------------------------------
This SF.Net email is sponsored by the Moblin Your Move Developer's challenge
Build the coolest Linux based applications with Moblin SDK & win great prizes
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http://moblin-contest.org/redirect.php?banner_id=100&url=/
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