[Numpy-discussion] numpy.float64(numpy.NaN)!=numpy.NaN

[Simon Burton]

On Mon, 15 May 2006 09:21:59 -0400
Sasha <ndarray at mac.com> wrote:

> 
> BTW,
> 
> >>> from numpy import *
> >>> nan == nan
> False
> 
> >>> from decimal import *
> >>> Decimal('NaN') == Decimal('NaN')
> False
> 
> and finally (may not work on all platforms):
> 
> >>> float('NaN') == float('NaN')
> False

Yes. It looks like the "isnan" function is what I need.

I use NaN for missing data points, and I do masking
on NaN, etc. Quite handy really.

Simon.

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