Here is a html version of my post. http://home.comcast.net/~harterc1/rasterbug.html
I was getting output like below from may tiff files which were tiled by mapserver. I took look at each tiff file and examined them with utilities. The tiff files that did not seem to work were encoded with big endian. I converted one such file to little endian, but that did not fix the trouble. This is the one that did not display properly: drh:/srv/www/htdocs>tiffdump data/tn_topo2/o36087a2.tif data/tn_topo2/o36087a2.tif: Magic: 0x4d4d <big-endian> Version: 0x2a Directory 0: offset 8336360 (0x7f33e8) next 0 (0) SubFileType (254) LONG (4) 1<0> ImageWidth (256) SHORT (3) 1<5254> ImageLength (257) SHORT (3) 1<6699> BitsPerSample (258) SHORT (3) 1<8> Compression (259) SHORT (3) 1<32773> Photometric (262) SHORT (3) 1<3> ImageDescription (270) ASCII (2) 61<USGS GeoTIFF DRG 1:24000 ...> StripOffsets (273) LONG (4) 6699<8 92 176 260 344 428 512 596 680 764 848 932 1018 1109 1206 1300 1388 1474 1560 1648 1738 1824 1910 1998 ...> SamplesPerPixel (277) SHORT (3) 1<1> RowsPerStrip (278) SHORT (3) 1<1> StripByteCounts (279) LONG (4) 6699<84 84 84 84 84 84 84 84 84 84 84 86 91 97 94 88 86 86 88 90 86 86 88 86 ...> XResolution (282) RATIONAL (5) 1<250> YResolution (283) RATIONAL (5) 1<250> PlanarConfig (284) SHORT (3) 1<1> ResolutionUnit (296) SHORT (3) 1<2> Software (305) ASCII (2) 43<USGS CD Archiver program ...> DateTime (306) ASCII (2) 20<1996:11:04 17:10:55\0> Colormap (320) SHORT (3) 768<0 65280 0 51968 33536 51456 35072 65280 42752 65280 55808 53504 52992 0 0 0 0 0 0 0 0 0 0 0 ...> 33550 (0x830e) DOUBLE (12) 3<2.4384 2.4384 0> 33922 (0x8482) DOUBLE (12) 6<0 0 0 476702 3.99841e+06 0> 34735 (0x87af) SHORT (3) 20<1 0 2 4 1024 0 1 1 1025 0 1 1 3072 0 1 26716 3073 34737 25 0> 34737 (0x87b1) ASCII (2) 26<UTM Zone 16 N with NAD27 ...> drh:/srv/www/htdocs>tiffinfo data/tn_topo2/o36087a2.tif TIFFReadDirectory: Warning, data/tn_topo2/o36087a2.tif: unknown field with tag 33550 (0x830e) encountered. TIFFReadDirectory: Warning, data/tn_topo2/o36087a2.tif: unknown field with tag 33922 (0x8482) encountered. TIFFReadDirectory: Warning, data/tn_topo2/o36087a2.tif: unknown field with tag 34735 (0x87af) encountered. TIFFReadDirectory: Warning, data/tn_topo2/o36087a2.tif: unknown field with tag 34737 (0x87b1) encountered. TIFF Directory at offset 0x7f33e8 (8336360) Subfile Type: (0 = 0x0) Image Width: 5254 Image Length: 6699 Resolution: 250, 250 pixels/inch Bits/Sample: 8 Compression Scheme: PackBits Photometric Interpretation: palette color (RGB from colormap) Samples/Pixel: 1 Rows/Strip: 1 Planar Configuration: single image plane Color Map: (present) ImageDescription: USGS GeoTIFF DRG 1:24000 Quad of White Bluff. Product:486355 Software: USGS CD Archiver program tif2usgsdrg v.1.0 DateTime: 1996:11:04 17:10:55 Tag 33550: 2.438400,2.438400,0.000000 Tag 33922: 0.000000,0.000000,0.000000,476701.795786,3998406.010399,0.000000 Tag 34735: 1,0,2,4,1024,0,1,1,1025,0,1,1,3072,0,1,26716,3073,34737,25,0 Tag 34737: UTM Zone 16 N with NAD27| And this is the one that did display properly: tiffdump data/tn_topo2/o35087h2.tif data/tn_topo2/o35087h2.tif: Magic: 0x4949 <little-endian> Version: 0x2a Directory 0: offset 7225380 (0x6e4024) next 0 (0) ImageWidth (256) SHORT (3) 1<5577> ImageLength (257) SHORT (3) 1<6930> BitsPerSample (258) SHORT (3) 1<8> Compression (259) SHORT (3) 1<32773> Photometric (262) SHORT (3) 1<3> StripOffsets (273) LONG (4) 6930<8 98 188 282 372 464 558 659 757 860 961 1082 1218 1347 1451 1544 1638 1732 1826 1924 2018 2114 2212 2302 ...> Orientation (274) SHORT (3) 1<1> SamplesPerPixel (277) SHORT (3) 1<1> RowsPerStrip (278) SHORT (3) 1<1> StripByteCounts (279) LONG (4) 6930<90 90 94 90 92 94 101 98 103 101 121 136 129 104 93 94 94 94 98 94 96 98 90 104 ...> PlanarConfig (284) SHORT (3) 1<1> Colormap (320) SHORT (3) 768<0 65280 0 51968 33536 51456 35072 65280 42752 65280 55808 53504 52992 0 0 0 0 0 0 0 0 0 0 0 ...> 33550 (0x830e) DOUBLE (12) 3<2.4 2.4 1> 33922 (0x8482) DOUBLE (12) 6<0 0 0 476364 3.98449e+06 0> 34735 (0x87af) SHORT (3) 20<1 1 0 4 1024 0 1 1 1025 0 1 1 3072 0 1 26716 3076 0 1 9001> drh:/srv/www/htdocs>tiffinfo data/tn_topo2/o35087h2.tif TIFFReadDirectory: Warning, data/tn_topo2/o35087h2.tif: unknown field with tag 33550 (0x830e) encountered. TIFFReadDirectory: Warning, data/tn_topo2/o35087h2.tif: unknown field with tag 33922 (0x8482) encountered. TIFFReadDirectory: Warning, data/tn_topo2/o35087h2.tif: unknown field with tag 34735 (0x87af) encountered. TIFF Directory at offset 0x6e4024 (7225380) Image Width: 5577 Image Length: 6930 Bits/Sample: 8 Compression Scheme: PackBits Photometric Interpretation: palette color (RGB from colormap) Orientation: row 0 top, col 0 lhs Samples/Pixel: 1 Rows/Strip: 1 Planar Configuration: single image plane Color Map: (present) Tag 33550: 2.400000,2.400000,1.000000 Tag 33922: 0.000000,0.000000,0.000000,476363.690000,3984492.570000,0.000000 Tag 34735: 1,1,0,4,1024,0,1,1,1025,0,1,1,3072,0,1,26716,3076,0,1,9001 I then ran this command on the problem file geotifcp -c packbits -f lsb2msb -t data/tn_topo2/o36087a2.tif data/tn_topo2/o36087a2bug.tif This fixed many problems. I changed some of the parameters. It seems that it is the â-tâ/tiled that fixed it. So I may change all the other problem files this way. Here is what it looks like after the change. It looks much better but with a few glitches. _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
