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Re: Mean and NaNs [message #83117]

Wed, 06 February 2013 11:06

Fabzi
Messages: 305
Registered: July 2010

Senior Member

Hi Craig,

On 02/06/2013 06:38 PM, Craig Markwardt wrote:
> What do you expect to happen when*all* of the values are NAN?

I expect a NaN.

So the result of mean() is consistent to me, but the "Floating illegal
operand" is annoying.

For example, I have a 3D array of geopotential heights at a certain
pressure level, some of the pixels are always NaNs because of
topography. I compute means on the third dimension which is time. When I
Plot the results, I can go along automatically with NaNs in my data
image. I just find it awkward and inefficient to have to write a case
for these pixels, just to remove the "Floating illegal operand" warning...

But it seems quite useless to argue in this direction, my precious posts
on the inconsistency in value_locate() results with NaNs also found not
much interest

Anyway, thanks for your answer!

Fab

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		Re: Mean and NaNs By: Fabzi on Wed, 06 February 2013 11:06
		Re: Mean and NaNs By: Craig Markwardt on Wed, 06 February 2013 09:38

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