I'm trying to figure out the easiest/best way to create a static tile cache (prerendered) of a map layout created in ArcGIS to be accessed using OpenLayers.
Here's the background: The current USGS real time earthquake website uses pre-rendered maps using circa 1995 technology. These maps get rendered as static graphic files on a system at the Survey and then copied to servers at Akamai. This works well because immediately following any decent quake, traffic to this site jumps to hundreds-of-thousands of hits per second. The basemaps for the rendering code are basically a collection of static graphics exported from ArcGIS. The basemap symbology has been carefully constructed for this purpose by real cartographers. I'm trying to figure out the best way to assemble a more dynamic website - but a typical ArcServer->Web Browser or GeoServer->OpenLayers system won't be able to scale to the kind of traffic seen immediately following a quake. The GeoServer->Tilecache->OpenLayers is an obvious step in the direction we need to go - but I don't really want to have to replicate the ArcGIS symbology in GeoServer (or Mapnik or MapServer). So I'm trying to figure out if I use ArcServer to generate a static tilecache (i.e., the collection of 256x256 png files), how can I access it via OpenLayers? One possibility is to try to get the AGS extension to OpenLayers working (which seems to be abandoned). Another is to kludge TileCache.cgi for the directory structure generated by ArcServer's tile cache seeding. And yet another is to try to restructure the tiles generated by ArcServer in a way that TileCache.cgi likes. Any help is much appreciated. -Eric -=--=---=----=----=---=--=-=--=---=----=---=--=-=- Eric B. Wolf 720-209-6818 USGS Geographer Center of Excellence in GIScience PhD Student CU-Boulder - Geography _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
