bratliff wrote: > On Jan 25, 3:46 pm, Lance Dyas <[email protected]> wrote: > >> It is simply a question of which code to use for a particular WMS to >> match the projection >> the most recent will use the official one .... EPSG 3785 others use EPSG >> 41001 or EPSG 54004 >> still others use EPSG 900913 >> > > Please demonstrate. > > Google uses a sphere. The others use ellipsoids. No, that is not correct.
http://www.iter.dk/post/2008/05/SphericalWeb-Mercator-EPSG-code-3785.aspx > Except for EPSG: > 4326 which uses Lat/Lon coordinates, the BBOX parameters must be > expressed in meters. I think there are some horrifically non standard projections .. .which are in feet > The USGS servers may not support every EPSG. Sure. and note I said find out the code for a particular WMS. some of them support epsg codes they dont advertise because the list makes the getcapabilities way too long. The most recent versions of the most popular WMS software... Geoserver and Mapserver and recent commercial software including TNTserver all support the Web Mercator spherical projection. If you insist on hunting for WMS in the wild you find yourself far more limited but there are many more servers in the world than the USGS ones http://www.microimages.com/wmscatalog/ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Maps-API?hl=en -~----------~----~----~----~------~----~------~--~---
