On the web site from which I distribute spatial data, I provide shapefiles with projection information as a .prj file. I've drawn the contents of these prj files from the srtext field of the spatial_ref_sys table.
A user has pointed out to me that this is inconvenient for people running ArcGIS because ArcGIS expects to see different values as the name of the coordinate system and the datum. I have not seen a standard that specifies these names. Is there one? It looks like I could change my .prj files to fit ArcGIS without much trouble. But would this change break other applications? Are there GIS applications other than ArcGIS that rely strongly on these names? How do others support portability of projection information in downloadable data using the shapefile format? Peter -- Peter N. Schweitzer (MS 954, U.S. Geological Survey, Reston, VA 20192) (703) 648-6533 FAX: (703) 648-6252 email: pschweit...@usgs.gov <http://geology.usgs.gov/peter/> _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
