Hi, I've converted some 8 bit rasters to GeoTIFF format and spherical mercator projection using FME. I'm getting large blue edges where the tiles meet:
http://dl.dropbox.com/u/23077047/Misc1use/rasters.jpg http://dl.dropbox.com/u/23077047/Misc1use/rasters.jpg In ArcGIS the tiles appear seamless. Is this because MapServer do not support the nodata tiff tag, as it is not officially part of the geotiff standard (http://www.awaresystems.be/imaging/tiff/tifftags/gdal_nodata.html). I do not believe there is a problem with the files we are writing, as other applications (e.g. ArcCatalog) pick up on the nodata value just fine. Another potential solution is to add an alpha band to the raster instead of a nodata value. Do you think MapServer will support this? Would using ecw images resolve the issue? Here is an excerpt of the MapServer file: # Web interface definition. Only the template parameter # is required to display a map. See MapServer documentation WEB IMAGEPATH "C:/ms4w/tmp/" IMAGEURL "C:/ms4w/tmp/" # WMS server settings METADATA 'wms_title' '"TESTMAPFILE"' 'wms_onlineresource' 'http://193.120.94.23:8081//cgi-bin/mapserv.exe?map=C:/MS4W/apps/CacheMapConfig/raster.map' 'wms_srs' 'EPSG:900913' END END LAYER NAME test #DATA "GEOTIFF_SM\O3036-C.tif" STATUS ON TYPE RASTER DEBUG 1 MINSCALE 13500 MAXSCALE 55000 TILEINDEX "ireland.shp" TILEITEM "LOCATION" END Many thanks, Annette -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Rasters-tp6482500p6482500.html Sent from the Mapserver - User mailing list archive at Nabble.com. _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
