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Re: Setting values to NaN [message #39931 is a reply to message #39928]

Fri, 25 June 2004 08:27

matt_westmore
Messages: 4
Registered: June 2004

Junior Member

OK I spotted it. F_NAN and D_NAN apply to floats.

So is there an alternative I can use with integers?

matt_westmore@yahoo.co.uk (Matt) wrote in message news:<c66373b9.0406250228.f6cbaf4@posting.google.com>...
> Hi,
> I'd realy appreciate someone pointing out why I'm an idiot.
>
> I'm trying to set some values of an image to NaN so that they are not
> included in further calculations but I can't seem to do it!!!
>
> eg:
> a = indgen(10)
> lt5 = where(a LT 5)
> a(lt5) = !VALUES.F_NAN
> %Program caused arithmetic error: Floating illegal operand
> print, a
> 0 0 0 0 0 5 6 7 8 9
>
> Cheers
> Matt

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[Message index]

		Re: Setting values to NaN By: Craig Markwardt on Fri, 25 June 2004 13:17
		Re: Setting values to NaN By: b_gom on Fri, 25 June 2004 11:38
		Re: Setting values to NaN By: Matt Feinstein on Fri, 25 June 2004 09:34
		Re: Setting values to NaN By: Michael Wallace on Fri, 25 June 2004 09:30
		Re: Setting values to NaN By: Craig Markwardt on Fri, 25 June 2004 09:14
		Re: Setting values to NaN By: Paul Van Delst[1] on Fri, 25 June 2004 08:50
		Re: Setting values to NaN By: matt_westmore on Fri, 25 June 2004 08:27
		Re: Setting values to NaN By: David Fanning on Fri, 25 June 2004 06:43
		Re: Setting values to NaN By: Klaus Scipal on Fri, 25 June 2004 04:41
		Re: Setting values to NaN By: matt_westmore on Wed, 30 June 2004 04:37

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