Has anyone used the USGS High Resolution Orthoimagery available via the Tiled Data Distribution System (TDDS)? The Seamless data is what is available via the USGS WMS servers as described on the wiki, however there's a great deal of imagery which is not on this service: http://orthoimagery.cr.usgs.gov/dispatches/PRODUCT_Orthos.html
At least for my area, the imagery from the Tiled service is far superior to what is available on the Seamless service (via WMS). However, this imagery can only be obtained by getting download URLs from their website or via a SOAP service, which results in a ZIP file containing the requested tile. In my case the tile was a GeoTIFF, but other formats may be possible. Of course, to make this usable in JOSM or Potlatch, more work must be done. Perhaps the easiest method would be to run GDAL2Tiles on the GeoTIFF to create a TMS-like cache. I'd be interested to know if anyone has used the TDDS. It would be quite useful to create a script that queries the USGS servers for available layers, downloads the appropriate ZIP packages, runs GDAL2Tiles on them, and then provides the user with a directory/URL that can then be used in JOSM (I'm not sure if Potlatch provides for local caches). However if someone has already created such a script, you'll save me the effort! Thanks, -Josh _______________________________________________ Talk-us mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-us
