I am not sure this will help or not.... I found two epsg files in my /usr/local/share/proj directory:
epsg EPSG (in caps) I modify the values in both the files for my use. You can also try the same Regards, Ritesh Ambastha /usr/local/share/proj/epsg On Thu, Aug 21, 2008 at 5:41 PM, Subha Ramakrishnan <[EMAIL PROTECTED]> wrote: > Hi, > Could you also check the map file and tell me if i am making a mistake > there? > This is the map file i am using. > > MAP > NAME MAP_POINTS > SIZE 725 800 > IMAGETYPE PNG > EXTENT 6679169.446666667 -7.081154550627918 11131949.077777777 > 4865942.278825832 > WEB > METADATA > wms_srs "EPSG:4326 EPSG:900913" > END > END > PROJECTION > "init=epsg:900913" > END > LAYER > CONNECTIONTYPE postgis > NAME indiastates > CONNECTION "user=postgres dbname=test host=localhost" > TYPE POINT > STATUS DEFAULT > #DATA "topology from states" > DATA "topology from india_states using unique id using SRID -1" > CLASS > COLOR 255 0 0 > END > END > END > > Is it possible for you to share your map file if you have any? > > Regards, > Subha > > Rafael Almeida Fernandez Soto wrote: > >> Subha.. >> >> You need to insert a EPSG:900913 description code in PROJ4 config files >> and a row in spatial_ref_sys table in postgis DB. By default PROJ4 has not a >> 900013 projection reference. >> >> Try it! >> >> Best regards >> >> Rafael Soto >> >> 2008/8/20 Subha Ramakrishnan <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> >> >> >> Hi : >> We are building a map based web portal using openlayers ,UMN >> mapserver[5.0.2] and postgis DB.We use google as the base map >> through openlayers.We need to overlay our custom layers from the >> db on top of this base map, for that we are using Mapserver (is >> run on a FC7 linux machine). It is observed that by default >> openlayers converts google projection [900913] to EPSG:4326 when >> the base map is fetched. >> >> Now when we try to overlay an image that the mapserver generates, >> there is a mismatch on the base map, though mapserver uses >> epsg::4326. After searching over the internet theere seems to be >> only one solution which is displaying the base map itself in >> epsg:900913 and emit the mapserver image also in the same >> projection. The problem is we are not able to generate an image >> through mapserver in epsg::900913. >> >> We have taken following measures untill now : >> >> 1> For using epsg:900913 projection in mapserver, we have added >> following entry in the /usr/local/share/proj/epsg file.[proj >> version 4.6] >> "<900913> +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 >> +x_0=0.0 +y_0=0 +k=1.0 +units=m [EMAIL PROTECTED] +no_defs <>" 2> >> We have added following entry in the "in the spatial_ref_sys table >> in postgis DB. >> "900913 ,'EPSG',900913,'GEOGCS["WGS 84", DATUM["World Geodetic >> System 1984", SPHEROID["WGS 84", 6378137.0, >> 298.257223563,AUTHORITY["EPSG","7030"]], >> AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich", 0.0, >> AUTHORITY["EPSG","8901"]], UNIT["degree",0.017453292519943295], >> AXIS["Longitude", EAST], AXIS["Latitude", >> NORTH],AUTHORITY["EPSG","4326"]], >> PROJECTION["Mercator_1SP"],PARAMETER["semi_minor", 6378137.0], >> PARAMETER["latitude_of_origin",0.0], PARAMETER["central_meridian", >> 0.0], PARAMETER["scale_factor",1.0], PARAMETER["false_easting", >> 0.0], PARAMETER["false_northing", 0.0],UNIT["m", 1.0], AXIS["x", >> EAST], AXIS["y", NORTH],AUTHORITY["EPSG","900913"]] |','+proj=merc >> +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 >> +k=1.0 +units=m [EMAIL PROTECTED] +no_defs'); The mapfile is as >> follows: (With this, We get a blank image without any exception.) >> MAP >> NAME MAP_POINTS >> SIZE 725 800 >> IMAGETYPE PNG >> EXTENT 6679169.446666667 -7.081154550627918 11131949.077777777 >> 4865942.278825832 >> WEB >> METADATA >> wms_srs "EPSG:4326 EPSG:900913" >> END >> END >> PROJECTION >> "init=epsg:900913" >> END >> LAYER >> CONNECTIONTYPE postgis >> NAME indiastates >> CONNECTION "user=postgres dbname=test host=localhost" >> TYPE POINT >> STATUS DEFAULT >> #DATA "topology from states" >> DATA "topology from india_states using unique id using SRID -1" >> CLASS >> COLOR 255 0 0 >> END >> END >> END >> >> The client (openlayer) code is as follows : >> options = { >> projection: new OpenLayers.Projection("EPSG:900913"), >> displayProjection: new OpenLayers.Projection("EPSG:4326"), >> units: "m", >> maxResolution: 156543.0339, >> maxExtent: new OpenLayers.Bounds(-20037508, -20037508, >> 20037508, 20037508.34) >> }; >> map = new OpenLayers.Map('map', options); >> var gphy = new OpenLayers.Layer.Google("Google >> Physical",{type: G_PHYSICAL_MAP,'sphericalMercator': true}); >> map.addLayers(gphy); >> var lonLat = new OpenLayers.LonLat(82, 23) ; >> >> lonLat.transform(map.displayProjection,map.getProjectionObject()); >> map.setCenter(lonLat,5); >> var wms ; >> wms = new OpenLayers.Layer.WMS( layername, >> "http://localhost/cgi-bin/mapserv?";, >> { map: 'demo.map', >> projection:"EPSG:900913", >> transparent: 'true', layers: 'indiastates', >> format: 'image/png'},{singleTile: 'true'} ); >> map.addLayer(twms1); >> >> Can anyone help us in any way? >> Also, >> We have tried overlaying layer fetched from our map server >> on different basemaps from (meta carta and tera pages) and have >> found it overlays perfectly So clearly there is is problem >> overlaying on google map through openlayers in epsg : 4326. >> Thanks and sorry for the long mail. >> Expecting a reply. >> >> Subha. >> _______________________________________________ >> mapserver-users mailing list >> [email protected] >> <mailto:[email protected]> >> http://lists.osgeo.org/mailman/listinfo/mapserver-users >> >> >> >> >> -- >> RAFAEL Almeida Fernandez Soto :: [EMAIL PROTECTED] <mailto: >> [EMAIL PROTECTED]> >> Consultant in FOSS GIS :: 55 21 2518-6233 :: 55 71 8802-0600 >> OpenGEO :: On-demand training and solutions :: www.opengeo.com.br < >> http://www.opengeo.com.br> >> GEO Livre community:: Because Geoinformation should be free :: >> www.geolivre.org.br <http://www.geolivre.org.br> >> Be free by using Free Software, such as MapServer, PostgreSQL/PostGIS, >> gvSIG... >> >> -- >> This message has been scanned for viruses and >> dangerous content by *MailScanner* <http://www.mailscanner.info/>, and is >> believed to be clean. >> > > _______________________________________________ > > mapserver-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapserver-users >
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