Recently http://svn.openlayers.org/trunk/openlayers/lib/OpenLayers/Layer/ArcGIS93Rest.js was added to the openlayers trunk version, might we worth checking out. I'm not sure how fitting the AGS REST-interface is for cached services though.
I think there is some WIP in consuming an ArcGIS Server cache directly via openlayers too, but you should ask the openlayers list about that. The third option I see, converting an ArcGIS Server cache to the structure used by tilecache wouldn't be extremely hard to do, but noone has done that yet afaik. /Björn On Wed, Feb 25, 2009 at 18:40, Eric Wolf <[email protected]> wrote: > 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 > _______________________________________________ > Tilecache mailing list > [email protected] > http://openlayers.org/mailman/listinfo/tilecache > _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
