Hi, We are trying to publish to GeoServer some older paletted tiff-images but have a strange problem - GeoServer returns a totally white image, no error messages (checked the logs). First we tried with ImageMosaic, then also single images. Some of the single images were showing up normally, some are also white, although with gdalinfo I do not see any differences for these images and they are from same vendor from same delivery (example below).
The files are paletted geotiffes and are about 10 years old, but for example in QGIS they display without any problems. According to this post (http://osgeo-org.1560.x6.nabble.com/Publishing-GeoTiffs-ColorPalette-with-Alpha-td5128601.html), I could understand, that paletted geotiffs with alpha channel can not be published with GeoServer? But some of the images do show up?? * I tried also changing the style, so that certain values would have certain color, but no change. The images showing up have the default raster style. . Clicking on the map preview does not give any results, could think that if for some reason whole image is just pained white, it still would give values for GetFeatureInfo request? * Tried also setting Coverage Band Details minRange and MaxRange, but no change. By default both were 0 for imagemosaic, but -indefinite to indefinite for single image. * The granule grid for ImageMosaic looks good. And the coordinates for Preview seem ok. * GeoServer version 2.7.1 gdalinfo gives: gdalinfo 28_29op.tif Driver: GTiff/GeoTIFF Files: 28_29op.tif 28_29op.aux 28_29op.rrd 28_29op.tfw Size is 1600, 1600 Coordinate System is: PROJCS["KKJ / Finland Uniform Coordinate System", GEOGCS["KKJ", DATUM["Kartastokoordinaattijarjestelma_1966", SPHEROID["International 1924",6378388,297.0000000000014, AUTHORITY["EPSG","7022"]], AUTHORITY["EPSG","6123"]], PRIMEM["Greenwich",0], UNIT["degree",0.0174532925199433], AUTHORITY["EPSG","4123"]], PROJECTION["Transverse_Mercator"], PARAMETER["latitude_of_origin",0], PARAMETER["central_meridian",27], PARAMETER["scale_factor",1], PARAMETER["false_easting",3500000], PARAMETER["false_northing",0], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AUTHORITY["EPSG","2393"]] Origin = (3339950.000000000000000,7519950.000000000000000) Pixel Size = (100.062539086929334,-100.062539086929334) Metadata: AREA_OR_POINT=Area TIFFTAG_RESOLUTIONUNIT=1 (unitless) TIFFTAG_SOFTWARE=Arc/Info TIFFTAG_XRESOLUTION=0.0099999998 TIFFTAG_YRESOLUTION=0.0099999998 Image Structure Metadata: INTERLEAVE=BAND Corner Coordinates: Upper Left ( 3339950.000, 7519950.000) ( 23d12'59.77"E, 67d43'18.78"N) Lower Left ( 3339950.000, 7359849.937) ( 23d25'59.61"E, 66d17'21.51"N) Upper Right ( 3500050.063, 7519950.000) ( 27d 0' 4.27"E, 67d45'56.68"N) Lower Right ( 3500050.063, 7359849.937) ( 27d 0' 4.02"E, 66d19'48.82"N) Center ( 3420000.031, 7439899.969) ( 25d 9'46.89"E, 67d 2'14.75"N) Band 1 Block=1600x6 Type=Byte, ColorInterp=Palette Description = Band_1 Overviews: 400x400, 200x200, 100x100, 50x50 Metadata: LAYER_TYPE=thematic Color Table (RGB with 256 entries) 0: 0,0,0,255 1: 241,148,241,255 2: 223,255,202,255 3: 255,0,0,255 4: 186,223,234,255 etc until 255 Best regards, Kylli Ek GIS-coordinator CSC - IT Center for Science Ltd PL 405, 02101 Espoo Tel: +358 50 38 12 838 [email protected]
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