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Re: envi/idl question from a newbie [message #16161]

Fri, 02 July 1999 00:00

korpela
Messages: 59
Registered: September 1993

Member

In article <7lg50d$m2c$1@news.nero.net>,
Mark Amend <mark.amend@hmsc.orst.edu> wrote:
> Dear IDL group-
>
> I'm using ENVI 3.1/IDL 5.1 and would like to set pixel values of 0.0 to NaN
> in order to carry out some analyses without including 0.0 values. Is there
> an easy way to do this with the Band Math function of ENVI, or is there a
> quick and dirty IDL solution?

image[where(image eq 0)]=!values.f_nan

or

image=image+!values.f_nan*(image eq 0)

?

Eric

--
Eric Korpela | An object at rest can never be
korpela@ssl.berkeley.edu | stopped.
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		Re: envi/idl question from a newbie By: korpela on Fri, 02 July 1999 00:00
		Re: envi/idl question from a newbie By: Peter Mason on Fri, 02 July 1999 00:00
		Re: envi/idl question from a newbie By: Mark Amend on Thu, 01 July 1999 00:00

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