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December 2003
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2003.12.03 18:40 "Double Precision TIFF images", by Frank Warmerdam
Chris Cox wrote: > > Does anyone have a double precision floating point RGB TIFF image that > they could share with me for testing? > Preferably it wouldn't be too large, and would have some recognizable > content. Chris, I have prepared a smallish sample for you in double precision at: http://pobox.com/~warmerdam/rgb_dbl.tif Approximately 1MB. It is the bowling sample but with the values converted to double precision and rescaled to 0.0 to 1.0. I produced it with this Python script using my GDAL library (based on libtiff). import gdal import gdalnumeric from Numeric import * img = gdalnumeric.LoadFile( 'rgba.tif' ) img = img / 255.0 img = img.astype(Float64) img = img[0:3] gdalnumeric.SaveArray( img, 'rgba_dbl.tif' ) Best regards, -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, warmerdam@pobox.com light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Programmer for Rent