http://fuzzytolerance.info/code/raster-in-the-database/ very funny Scotty. now beam down my pants. Mon, 26 Jul 2010 13:20:05 +0000 hourly 1 http://wordpress.org/?v=3.0 http://fuzzytolerance.info/code/raster-in-the-database/comment-page-1/#comment-134 Julia Harrell Fri, 31 Aug 2007 18:35:07 +0000 http://maps.co.mecklenburg.nc.us/ft/?p=149#comment-134 Actually, Mapserver will do raster pixel queries, so you can get cell values from an image without having to clog up your database with imagery or DEMs. See http://mapserver.gis.umn.edu/docs/howto/raster_data/#raster-query and http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?RasterQuery. WMS GetFeatureInfo requests also work against raster layers in a WMS served by Mapserver. If your WMS returns GetFeatureInfo responses in GML instead of plain text or HTML, you have set the layer to DUMP TRUE in the mapfile and also set the gml_* metadata for the layer attributes to be served. You also need to set the layer TEMPLATE parameter for the layer to be queryable by GetFeatureInfo requests. For requests of type "text/html" you should also set the layer HEADER and FOOTER parameters. Actually, Mapserver will do raster pixel queries, so you can get cell values from an image without having to clog up your database with imagery or DEMs. See http://mapserver.gis.umn.edu/docs/howto/raster_data/#raster-query and http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?RasterQuery. WMS GetFeatureInfo requests also work against raster layers in a WMS served by Mapserver. If your WMS returns GetFeatureInfo responses in GML instead of plain text or HTML, you have set the layer to DUMP TRUE in the mapfile and also set the gml_* metadata for the layer attributes to be served. You also need to set the layer TEMPLATE parameter for the layer to be queryable by GetFeatureInfo requests. For requests of type “text/html” you should also set the layer HEADER and FOOTER parameters.

]]> http://fuzzytolerance.info/code/raster-in-the-database/comment-page-1/#comment-133 Alexandre de Amorim Fri, 03 Aug 2007 14:02:43 +0000 http://maps.co.mecklenburg.nc.us/ft/?p=149#comment-133 I agree that there is no advantage to putting raster layers in a database, but only if the raster layers are images. If we have to deal with DEM and other raster layers derived from this, in which we have to obtain cell values in a determined point, I think that we have to put raster layers in a database. I agree that there is no advantage to putting raster layers in a database, but only if the raster layers are images. If we have to deal with DEM and other raster layers derived from this, in which we have to obtain cell values in a determined point, I think that we have to put raster layers in a database.

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