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Re: Filtering out NaNs [message #8529 is a reply to message #8528]

Wed, 19 March 1997 00:00

steinhh
Messages: 260
Registered: June 1994

Senior Member

In article <Iarla-1903971745010001@eorcu4.ch.cam.ac.uk>, Iarla@atm.ch.cam.ac.uk (Iarla Kilbane-Dawe) writes:
|> Hello,
|>
|> There are some NaNs in my data which keep making my code fall over. I'd
|> like to either filter them out or avoid them in the calculation, but doing
|> something like
|>
|> a(where(a eq !values.f_nan) = missing_flag
|>
|> doesn't work. Does anyone have any suggestions?
|>

NaNs are characterized by the fact that they are *not* equal
to any number (that's what it says, isn't it :-)

In fact, it's not even equal to itself - and this is the distinguishing
feature that must be used to pick them out. I.e.,

a(where(a ne a)) = missing_flag

Stein Vidar

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[Message index]

		Filtering out NaNs By: iarla on Wed, 19 March 1997 00:00
		Re: Filtering out NaNs By: steinhh on Wed, 19 March 1997 00:00
		Re: Filtering out NaNs By: Mark Hadfield on Sun, 23 March 1997 00:00
		Re: Filtering out NaNs By: Christian Marquardt on Fri, 21 March 1997 00:00

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