comp.lang.idl-pvwave archive: archive » Re: where() and IEEE NaN

Home » Public Forums » archive » Re: where() and IEEE NaN

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: where() and IEEE NaN [message #17798 is a reply to message #17793]

Fri, 05 November 1999 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

Pavel Romashkin (promashkin@cmdl.noaa.gov) writes:

> I am not sure if trying to use WHERE on NaN is legitimate. NaN is a
> missing value by definition, and the request to WHERE those values is
> senseless.

Spoken like a software developer, Pavel! Bravo! :-)

> However, I'd too better like WHERE to complain than to
> quietly return some array.

Uh, well, yeah. :-(

> It does not seem to be a *practical* problem because NaNs don't sneak
> into your arrays unless you place them in.

Or, more likely read them from a file of someone else's
data, where they can sometimes cause all kinds of havoc.

> As for whether its right or wrong, I think someone said it before: iI am
> more interested in how to do what I need, not in how I think they did it
> wrong.

Really!? Now you sound like a computer programmer. I'm
confused. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

Report message to a moderator

[Message index]

		Re: where() and IEEE NaN By: korpela on Mon, 08 November 1999 00:00
		Re: where() and IEEE NaN By: badastro on Mon, 08 November 1999 00:00
		Re: where() and IEEE NaN By: Pavel Romashkin on Mon, 08 November 1999 00:00
		Re: where() and IEEE NaN By: thompson on Mon, 08 November 1999 00:00
		Re: where() and IEEE NaN By: jsb on Thu, 11 November 1999 00:00
		Re: where() and IEEE NaN By: korpela on Sat, 06 November 1999 00:00
		Re: where() and IEEE NaN By: Vincenzo Andretta on Sat, 06 November 1999 00:00
		Re: where() and IEEE NaN By: davidf on Fri, 05 November 1999 00:00
		Re: where() and IEEE NaN By: davidf on Fri, 05 November 1999 00:00
		Re: where() and IEEE NaN By: Pavel Romashkin on Fri, 05 November 1999 00:00
		Re: where() and IEEE NaN By: thompson on Fri, 05 November 1999 00:00
		Re: where() and IEEE NaN By: T Bowers on Fri, 05 November 1999 00:00
		Re: where() and IEEE NaN By: badastro on Fri, 05 November 1999 00:00
		Re: where() and IEEE NaN By: davidf on Fri, 05 November 1999 00:00
		Re: where() and IEEE NaN By: korpela on Fri, 05 November 1999 00:00

Previous Topic:	Re: Center of mass???
Next Topic:	Re: contour plots on walls of a cube

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Thu Oct 09 22:05:03 PDT 2025

Total time taken to generate the page: 1.68145 seconds