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PolarGeospatialCenter / imagery_utils

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Add LZW predictor setting for all GDAL command instances with `-co COMPRESS=LZW` #60

Closed ehusby closed 1 year ago

ehusby commented 1 year ago

Currently testing predictor=3 for optimal float compression. Note the FIXMEs about the ideal predictor setting for integer compression.

Shane98c commented 1 year ago

@ehusby here's a comparison of this PR with the current output for a Float32 ortho job. It appears to have increased the resulting filesize significantly. image

ehusby commented 1 year ago

I tested predictor values of 2 and 3 on output data types {Byte,UInt16,Float32}, and often the higher predictor value ended up making the output rasters larger than predictor value 1 (same as not setting it at all).

ehusby commented 1 year ago

Thanks for testing earlier this year, @Shane98c :) Miss ya!