On Thursday 16 August 2007 04:09, Andreas Laggner wrote: > Moin Stefan ;-) > > i want to use the spatial data from the raster together with vector data > in postgis. For example: soils from buk1000 and preception from DWD 1km > raster or altitude/slope from DEM25m raster to analyse potentials of > farmland. > I need the values from the cells in a spatial correct topology. > In the year 2007 the archive did not have any solutions for raster data > import....... > > hasta luego Andreas > > Stephan Holl schrieb: > > Hello Andreas,
Andreas, there are more suitable means to this end. Store your raster data in some GDAL-compatible format (compressed, tiled, geotiff works well), and you vector data in postgis. What you are trying to do is a simple operation for any program which can read GDAL/OGR datasources. One example is Starspan -- this can compute raster summaries for vector point/line/polygon features. I commonly use this approach to combine vector data stored in PostGIS and raster data stored in GRASS. Cheers, Dylan > > > > Andreas Laggner <[EMAIL PROTECTED]>, [20070816 - 10:43:36] > > > >> Moin PostGis users, > >> > >> i want to import huge raster datasets from ArcGis Grid or Erdas > >> Imagine .img to PostGis (for example DEM25 meters germany around 16 > >> million cells). What is the best way to do that? Found nothing in the > >> documentation that seems to be practical......(perhaps transform the > >> grid to points and import the points with the information of the > >> original cell size and the projection - but that seems to be > >> circuitous??). > > > > What are you going to achieve with that? Perhaps you could have a look > > at the archive of this list and search for raster data and so forth. > > There can be found an interesting dicussion about rasters and PostGIS. > > > > Best > > Stephan -- Dylan Beaudette Soils and Biogeochemistry Graduate Group University of California at Davis 530.754.7341 _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
