Stephen, There are couple of ways to view raster data.
1) QGIS has a plug-in for viewing raster which as I recall is on 1.7. QGIS users can probably fill you in on the details of that. 2) UMN Mapserver can also load PostGIS raster detailed here: http://www.postgis.org/documentation/manual-svn/RT_FAQ.html#id3031186 To be honest I haven't tried Mapserver in a couple of months with raster, so haven't confirmed all the changes we've done haven't broken it or if the syntax has changed. 3) You can use gdal_translate (compiled with PostgreSQL support) to output a postgis raster query. 4) And my favorite which is the one I use for documenting the PostGIS user docs like for example this picture is to output it to a file or memory stream using your favorite language http://www.postgis.org/documentation/manual-svn/RT_ST_Rescale.html An example of the ad hoc tool I built is here http://www.bostongis.com/blog/index.php?/archives/174-Minimalist-Web-based-A SP.NET-PostGIS-2.0-Spatial-GeometryRaster-Viewer.html (code is downloadable and free to use if you want ot play with it) It's a pretty short script that utilizes the raster output functions to output the query results to a browser response stream http://www.postgis.org/documentation/manual-svn/RT_reference.html#Raster_Out puts The approach is ideal if you need tight integration with your own custom app. It will work just as well with any language or report write capable of consuming file streams or a memory stream of a file e.g (Java using plain vanilall JDBC driver, .NET both desktop and web, PHP, Perl etc.) Thanks, Regina http://www.postgis.us -----Original Message----- From: postgis-users-boun...@postgis.refractions.net [mailto:postgis-users-boun...@postgis.refractions.net] On Behalf Of Stephen Crawford Sent: Tuesday, December 20, 2011 1:47 PM To: PostGIS Users Discussion Subject: [postgis-users] raster output Raster newbie question: How do I create an image from raster data I have in a postGIS raster db? For example I have some rainfall data (inches) and would like to make a classified map, perhaps 5 classes. Thanks, Steve -- Stephen Crawford Center for Environmental Informatics The Pennsylvania State University _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
