Kristian, You can use a PostGIS query as a tileindex. Take a look at: http://mapserver.gis.umn.edu/docs/howto/wms_time_support/#example-of-wms -t-with-postgis-tile-index-for-raster-imagery
If you are looking for performance, I am guessing that you can do better with spatially-indexed shapefiles. Have you created quadtree indexes for your tileindex shapefile? Take a look at shptree: http://mapserver.gis.umn.edu/docs/reference/utilityreference/shptree David. -----Original Message----- From: UMN MapServer Users List [mailto:[EMAIL PROTECTED] On Behalf Of Thy, Kristian Sent: Wednesday, November 22, 2006 6:25 AM To: [email protected] Subject: [UMN_MAPSERVER-USERS] Raster tile indexing in PostGIS Quoting the Raster Data Access HOWTO <http://mapserver.gis.umn.edu/docs/howto/raster_data>: "The list of files forming a layer can be stored in a shapefile with polygons representing the footprint of each file, and the name of the files. This is called a TILEINDEX ..." The tileindex, we're told, is defined in the map file like this: LAYER NAME "hpool" STATUS ON TILEINDEX "hp2.shp" TILEITEM "Location" TYPE RASTER END My question is then: Is it possible (and if yes, desirable) to read the tileindex from a PostGIS data source instead of a shapefile - i.e. use gdatindex to create the tileindex, then convert the index .shp using shp2pgsql and stuff it into PostGIS. My understanding is that using plain ole shapefiles you miss out on the gist indexing and thus suffer a performance loss. best regards, Kristian Thy This email and any attached files are confidential and copyright protected. If you are not the addressee, any dissemination of this communication is strictly prohibited. Unless otherwise expressly agreed in writing, nothing stated in this communication shall be legally binding.
