[postgis-users] parsing postgis answers

[Birgit Laggner]

Hi Michal,

you could use a combination of st_xmin, st_ymin, st_xmax and st_ymax 
instead of st_extent. They will provide you with the same coordinates as 
st_extent but in a numeric data type.

Hope that helps,

Birgit.


Am 05.12.2011 12:26, schrieb Micha? Droz.dz.:
>
> Hi List!
>
> I am fresh Postgis user and have a problem with ST_EXTENT. I am using 
> it to get data for map.zoomToExtent in openLayers.
>
> The problem is that zoomToExtens takes parameters as 
> zoomToExtent(value,value,value,value)
>
> http://dev.openlayers.org/docs/files/OpenLayers/Map-js.html#OpenLayers.Map.zoomToExtent
>
> from ST_EXTENT a receive WKT like this:
>
> "BOX(2294970.88258299 6588308.80462897,2295532.89622321 6588616.7042758)"
>
> How to parse that answer to get paremeters for OpenLayers in 
> appropirate format?
>
> I checked that OpenLayers is able to parse WKT but it is impossible 
> with BOX type.
>
> http://dev.openlayers.org/docs/files/OpenLayers/Format/WKT-js.html
>
> Thank for help!
>
> Michal
>
>
>
>
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