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Re: please help with ndvi calculation [message #52834 is a reply to message #52832]

Thu, 01 March 2007 21:23

Pierre V.
Messages: 13
Registered: December 2006

Junior Member

Phil,

My guess is that the function write_tiff is internally converting your
NDVI to type byte before writing it to a file. You can either scale
your data to properly fit into bytes using something like:

ndvi_byte = bytscl(ndvi_image, min = -1, max = 1).

Or you can try using the /float keyword to write_tiff to force it to
write out your data as floats.

-Pierre

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		Re: please help with ndvi calculation By: David Fanning on Thu, 01 March 2007 21:26
		Re: please help with ndvi calculation By: Pierre V. on Thu, 01 March 2007 21:23

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