Re: [OpenLayers-Users] Coordinates systems transformations?
Take a look at: http://spatialreference.org/ref/epsg/23030/ http://spatialreference.org/ref/epsg/23030/proj4js/ .david On 13/02/2008, Ruben Pardo [EMAIL PROTECTED] 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 [EMAIL PROTECTED]: 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 [EMAIL PROTECTED] 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 ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
Re: [OpenLayers-Users] Coordinates systems transformations?
EPSG:23030 is a UTM projection, so yes it is supported. Mike David E. Reksten wrote: Take a look at: http://spatialreference.org/ref/epsg/23030/ http://spatialreference.org/ref/epsg/23030/proj4js/ .david On 13/02/2008, Ruben Pardo [EMAIL PROTECTED] 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 [EMAIL PROTECTED]: 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 [EMAIL PROTECTED] 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 ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
Re: [OpenLayers-Users] Coordinates systems transformations?
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 [EMAIL PROTECTED] 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 ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
Re: [OpenLayers-Users] Coordinates systems transformations?
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 [EMAIL PROTECTED]: 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 [EMAIL PROTECTED] 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 ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
[OpenLayers-Users] Coordinates systems transformations?
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 ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
Re: [OpenLayers-Users] Coordinates systems transformations?
Hi, You need the proj4.js library to do reprojection in OpenLayers. https://svn.codehaus.org/mapbuilder/cscs/trunk/proj4js/lib Even with that I'm not sure EPSG:3003 will be supported. I recall that the author of proj4.js (Mike Adair) gave a list of supported projections on the OpenLayers mailing list but I can't find his email. Searching the mailing on nabble you should be able to find this list http://www.nabble.com/OpenLayers-f15906.html. Hope this helps; -- Eric On Feb 13, 2008 1:31 AM, Andrea Maschio [EMAIL PROTECTED] 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 ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
Re: [OpenLayers-Users] Coordinates systems transformations?
Ok, you're right 3003 isn't supported. But giving the Proj4 definition i have in my proj4 (java) epsg file, which is 3003 +proj=tmerc +lat_0=0 +lon_0=9 +k=0.999600 +x_0=150 +y_0=0 +ellps=intl +units=m +no_defs i could simply add my definition like this Proj4js.defs[EPSG:3003] = +title=Gauss Boaga EPSG:3003 \ +proj=tmerc +lat_0=0 +lon_0=9 +k=0.999600 +x_0=150 +y_0=0 +ellps=intl +units=m +no_defs; ? And as I see, OpenLayers actually doesn't use proj4.js for reprojecting, am I right? How can I perform the client side reprojection? Geoserver does it correctly but when my map is in utm coordinates (these are the googlish one, right?) if I try to get a feature via BBOX the BBOX it is not in the original feature's projection coordinates. Thanks a lot Andrea Maschio Il giorno 13/feb/08, alle ore 06:56, Eric Lemoine ha scritto: Hi, You need the proj4.js library to do reprojection in OpenLayers. https://svn.codehaus.org/mapbuilder/cscs/trunk/proj4js/lib Even with that I'm not sure EPSG:3003 will be supported. I recall that the author of proj4.js (Mike Adair) gave a list of supported projections on the OpenLayers mailing list but I can't find his email. Searching the mailing on nabble you should be able to find this list http://www.nabble.com/OpenLayers-f15906.html. Hope this helps; -- Eric On Feb 13, 2008 1:31 AM, Andrea Maschio [EMAIL PROTECTED] 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 ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users ___ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
