[OpenLayers-Users] Coordinates systems transformations?

David E. Reksten der at dod.no
Thu Feb 14 03:30:59 EST 2008


Take a look at:
http://spatialreference.org/ref/epsg/23030/
http://spatialreference.org/ref/epsg/23030/proj4js/

.david

On 13/02/2008, Ruben Pardo <correosig at gmail.com> wrote:
> hi,
> does proj4js support EPSG:23030 to WGS84 transformation or viceversa?
> i didn't see in the proj4js docs, is it going to support  it?
> Thanks very much.
>
> best regards
>
>
> 2008/2/13, David E. Reksten <der at dod.no>:
> > This is how I reproject LL to UTM32:
> >
> >     var destProj = new Proj4js.Proj(map.getProjection()); // Euref89 UTM32
> >     var sourceProj = new Proj4js.Proj("EPSG:4326"); // WGS84 LonLat
> >     var position = new OpenLayers.Geometry.Point(lon, lat);
> >     Proj4js.transform(sourceProj, destProj, position);
> >
> > Thereafter, position.x and position.y will contain the reprojected
> coordinates.
> >
> > Using trunk versions of OL and Proj4js. Hope this helps.
> >
> > .david
> >
> > On 13/02/2008, Andrea Maschio <andrea.maschio at gmail.com> wrote:
> > > Hi all, I suppose that the method Bounds.transform(ProjA, ProjB)
> > > should transform the coordinates between differents EPSG codes.
> > >
> > > Now I was trying this:
> > >
> > >             var p = bounds
> > >              console.log(p)
> > >              p = bounds.transform(new OpenLayers.Projection("EPSG:
> > > 900913"), new OpenLayers.Projection("EPSG:3003"))
> > >              console.log(p)
> > >
> > > But p has always the same coords. Btw I am working in a projected
> > > layer (projected from 3003 to 900913) and my wfs layers are ok, but
> > > being my coords in the Gauss Boaga metric system, I cannot get them
> > > correctly trying for example a GetFeatureInfo call using a BBOX.
> > >
> > > Shall I perform a linear translation of the coordinates?
> > >
> > > Thanks
> > >
> > >
> > >
> > > Andrea Maschio
> > > http://www.superandrew.it
> > >
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>
>



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