Hi list, we have a strange problem with an ArcSDE raster layer. At certain zoom levels the pixels are very coarse. Zooming out one level the pixels are okay, however the colour is not.
You can see this in the following images, the first one is zoomed out and everything is okay (except the colours since the image should be mostly black): http://www.osgis.nl/download/mapserver/rws1.png However when zooming in one level, we obtain the following situation: http://www.osgis.nl/download/mapserver/rws2.png Does anyone have an explanation for this? Using Mapserver trunk from about 3 months back and GDAL 1.7.2. This is the info from ArcCatalog about the raster layer: <TreeList><Data_Source><Raster>BODEM.DNZ_GRINDPERCENTAGE_TOT_15CM</Raster><Data_Type>SDE Raster</Data_Type><Server>geodatabase.ad.rws.nl<User>RWS_LEZEN</User><Instance>5151\tcp</Instance><Database></Database><Version>SDE.DEFAULT</Version></Server></Data_Source><Raster_Information><Columns_and_Rows>1161, 2021</Columns_and_Rows><Number_of_Bands>1</Number_of_Bands><Cellsize__X._Y_>250.00000000000011, 250</Cellsize__X._Y_><Uncompressed_Size>8.95 MB</Uncompressed_Size><Format>SDR</Format><Source_Type>continuous</Source_Type><Pixel_Type>floating point</Pixel_Type><Pixel_Depth>32 Bit</Pixel_Depth><NoData_Value>-3.402823E+38</NoData_Value><Colormap>absent</Colormap><Pyramids>level: 4, resampling: Nearest Neighbor</Pyramids><Compression>LZ77</Compression></Raster_Information><Extent><Top>6199911.5560208503</Top><Left>459782.82782689098</Left><Right>750032.82782689109</Right><Bottom>5694661.5560208503</Bottom></Extent><Spatial_Reference>ETRS_1989_UTM_Zone_31N<Linear_Unit>Meter (1.000000)</Linear_Unit><Angular_Unit>Degree (0.017453292519943299)</Angular_Unit><False_Easting>500000</False_Easting><False_Northing>0</False_Northing><Central_Meridian>3</Central_Meridian><Scale_Factor>0.9996</Scale_Factor><Latitude_Of_Origin>0</Latitude_Of_Origin><Datum>D_ETRS_1989</Datum></Spatial_Reference><Statistics><Band_1><Build_Parameters>skipped columns:1, rows:1, ignored value: </Build_Parameters><Min>0.5</Min><Max>59.80879974365234</Max><Mean>0.831969292920005</Mean><Std_dev.>2.825845448840229</Std_dev.><Classes>0</Classes></Band_1></Statistics></TreeList> The LAYER definition is: LAYER CONNECTIONTYPE SDE DATA "SDE:xxxxx.ad.rws.nl,port:5151,5151,RWS_LEZEN,XXXXXX,BODEM.DNZ_GRINDPERCENTAGE_TOT_15CM,RASTER" DUMP TRUE EXTENT 459782.827826891 5694661.55602085 750032.827826891 6199911.55602085 NAME "BODEM.DNZ_GRINDPERCENTAGE_TOT_15CM_5925" PROCESSING 'CLOSE_CONNECTION=DEFER' PROCESSING 'DITHER=NO' PROCESSING 'NODATA=NODATA' PROCESSING 'SCALE_1=0.5,59.8087997436523' PROCESSING 'BANDS=1' PROCESSING 'LOAD_FULL_RES_IMAGE=NO' PROCESSING 'LOAD_WHOLE_IMAGE=NO' SIZEUNITS PIXELS UNITS METERS STATUS ON TEMPLATE 'blank.html' TOLERANCE 5 TOLERANCEUNITS PIXELS TYPE RASTER PROJECTION 'init=epsg:25831' END METADATA 'wms_title' 'Grindpercentage, stretched' 'wms_layer_group' '/Grindpercentage_ NCP' 'wms_metadataurl_format' 'text/xml' 'wms_metadataurl_href' 'http://test.intranet.rijkswaterstaat.nl/services/geoservices-update/metadata/BODEM.DNZ_GRINDPERCENTAGE_TOT_15CM' 'wms_metadataurl_type' 'TC211' 'wcs_abstract' 'noordzee grind en zand raster' 'wcs_bandcount' '1' # 'wcs_description' 'noordzee grind en zand raster' # Optional 'wcs_extent' '459782.827826891,5694661.55602085,750032.827826891,6199911.55602085' 'wcs_formats' 'GTiff,MrSID,ECW' 'wcs_keywords' 'RWS,Rijkswaterstaat,noordzee grind en zand raster,BODEM.DNZ_GRINDPERCENTAGE_TOT_15CM_5925' 'wcs_label' 'Grindpercentage, stretched' # Required 'wcs_metadatalink_format' 'text/xml' 'wcs_metadatalink_href' 'http://test.intranet.rijkswaterstaat.nl/services/geoservices-update/metadata/BODEM.DNZ_GRINDPERCENTAGE_TOT_15CM' 'wcs_metadatalink_type' 'TC211' 'wcs_name' 'BODEM.DNZ_GRINDPERCENTAGE_TOT_15CM_5925' # 'wcs_nativeformat' 'Raster' # Optional 'wcs_rangeset_label' 'Grindpercentage, stretched' 'wcs_rangeset_name' 'BODEM.DNZ_GRINDPERCENTAGE_TOT_15CM_5925' END PROCESSING 'SCALE_BUCKETS=256' CLASS STYLE COLORRANGE 0 0 0 255 255 255 DATARANGE -4.81972160476045 6.48366019060046 RANGEITEM "pixel" END END END TIA. Best regards, Bart _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users