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Re: inverting a binary image(array)? [message #78286 is a reply to message #78285]

Sat, 05 November 2011 21:29

Jeremy Bailin
Messages: 618
Registered: April 2008

Senior Member

On 11/4/11 6:54 PM, desertdryad wrote:
> Hi folks -
>
> I have the need, in an IDL 7.0 / ENVI 4.5 script, to take a rather
> large raster (Landsat tile sized) of 1's and 0's, and invert it, in
> preferably an efficient manner. What's the most streamlined way to do
> this?
>
> thanks,
> Cyndy
>

If by "invert" you mean turn the 1s to 0s and the 0s to 1s, I would
hazard a guess that you're not going to get much more efficient than

data = 1 - data

-Jeremy.

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[Message index]

		Re: inverting a binary image(array)? By: desertdryad on Mon, 07 November 2011 11:58
		Re: inverting a binary image(array)? By: M. Katz on Mon, 07 November 2011 00:00
		Re: inverting a binary image(array)? By: Jim Pendleton on Sun, 06 November 2011 07:24
		Re: inverting a binary image(array)? By: Jeremy Bailin on Sat, 05 November 2011 21:29
		Re: inverting a binary image(array)? By: David Fanning on Fri, 04 November 2011 16:09

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