If I have a dataset with a scale and offset: kyle@ubuntu:~/Desktop$ gdalinfo test.tif Driver: GTiff/GeoTIFF Files: test.tif Size is 738, 919 Coordinate System is: PROJCS["WGS 84 / UTM zone 12N", ... Origin = (279635.000000000000000,4878315.000000000000000) Pixel Size = (30.000000000000000,-30.000000000000000) Metadata: AREA_OR_POINT=Point Image Structure Metadata: INTERLEAVE=BAND Corner Coordinates: Upper Left ( 279635.000, 4878315.000) (113d44'58.90"W, 44d 1'29.65"N) Lower Left ( 279635.000, 4850745.000) (113d44'17.87"W, 43d46'37.04"N) Upper Right ( 301775.000, 4878315.000) (113d28'25.33"W, 44d 1'52.37"N) Lower Right ( 301775.000, 4850745.000) (113d27'48.41"W, 43d46'59.57"N) Center ( 290705.000, 4864530.000) (113d36'22.60"W, 43d54'14.96"N) Band 1 Block=738x1 Type=Float32, ColorInterp=Gray Offset: 1, Scale:0.1
and I warp the image: kyle@ubuntu:~/Desktop$ gdalwarp -t_srs epsg:4326 test.tif warp.tif Creating output file that is 901P x 800L. Processing input file test.tif. 0...10...20...30...40...50...60...70...80...90...100 - done. My scale and offset disappear: kyle@ubuntu:~/Desktop$ gdalinfo warp.tif Driver: GTiff/GeoTIFF Files: warp.tif Size is 901, 800 Coordinate System is: GEOGCS["WGS 84", ... Origin = (-113.749693430469137,44.031215259056744) Pixel Size = (0.000317850797006,-0.000317850797006) Metadata: AREA_OR_POINT=Point Image Structure Metadata: INTERLEAVE=BAND Corner Coordinates: Upper Left (-113.7496934, 44.0312153) (113d44'58.90"W, 44d 1'52.37"N) Lower Left (-113.7496934, 43.7769346) (113d44'58.90"W, 43d46'36.96"N) Upper Right (-113.4633099, 44.0312153) (113d27'47.92"W, 44d 1'52.37"N) Lower Right (-113.4633099, 43.7769346) (113d27'47.92"W, 43d46'36.96"N) Center (-113.6065016, 43.9040749) (113d36'23.41"W, 43d54'14.67"N) Band 1 Block=901x2 Type=Float32, ColorInterp=Gray I couldn't find any docs on this. Is this known and/or expected? I would think scale and offset would be transferred to the new file. /** * * Kyle Shannon * [email protected] * */
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