On Fri, Dec 05, 2008 at 11:42:30AM -0400, Ken Sanderson wrote: > Hi everyone, this is about my third time giving OpenLayers a try and > this time I thought I would bite the bullet and ask some questions > instead of just going back to my mapserver setup. > > First a general best approach question. What I want to do is use google > data and put a simple polygon boundary on top. That boundary is > currently in a shape file. My thinking was to convert the shp file to > gml and just add it as a layer. I have since read that this maybe > tricker then I thought as google data is in a mercator projection that > does not have an EPSG code.
OpenLayers has a built in ability to convert between EPSG:4326 (lat/lon) and Google's Mercator projection: see http://docs.openlayers.org/spherical_mercator/#reprojecting-vector-data for more information on how to use it. > Second more specific to the use of GML layers. I converted my shp file > to GML using gvSIG and in another attempt shp2gml from spatial order. I > cannot get my GML file to be viewable. Thinking it might be a projection > issue I thought I would just display my GML file on its own, to avoid > any conflicting projections, but that hasnt worked either. Using the > gml-layer.html example I tried to work backwards and put my GML file in > there, no luck. Can you share the GML file you generated? It's possible this is a version problem, or some other parsing error: without seeing the GML file (or a sample file that fails) it's hard to know for sure. Regards, -- Christopher Schmidt MetaCarta _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
