rgdal, multiband CCITT compression
Hello, I can't seem to write a multi-band 1-bit CCITT-compressed GeoTIFF (using any of the CCITT compression methods). The file writes, but when reloaded the data are wrong (I can't tell for sure whether this is a read or write problem). I can write a 1-band 1-bit CCITT-compressed GeoTIFF fine, and I can write a multi-band 1-bit deflate-compressed GeoTIFF fine. This is on Windows XP x86, R 2.12.0, rgdal 0.6-28, sp 0.9-72, GDAL 1.7.1, PROJ.4 4.7.1. On a similar note, only GDAL seems to be able to handle any multi-band 1-bit GeoTIFFs it produces. ArcGIS 10 explicitly states (somewhere deep in their documentation) that multi-band 1-bit TIFFs are not supported. Even without compression, ENVI throws an error about an array with a corrupted descriptor, then crashes out. Is this a bug, or a limitation of TIFF, CCITT, or GDAL that I'm not aware of? Thoughts are appreciated, Oliver
Oliver Soong Donald Bren School of Environmental Science & Management University of California, Santa Barbara Santa Barbara, CA 93106-5131 805-893-7044 (office) 610-291-9706 (cell)