[Numpy-discussion] using NaN, INT_MIN etc in ndarray instead of a masked array

Gary Strangman strang at nmr.mgh.harvard.edu
Tue Apr 18 10:37:03 CDT 2006


>> Not true. R supports "NA" for all its types except raw bytes.
>> For example:
(snip)
>
> For Boolean values there is "room" for a NA value, but what about arbitrary 
> integers.  Does R just limit the range of the integer value?  That's what I 
> meant:  "fiddling with special-values" doesn't generalize to all data-types.

In R, I believe NA = -sys.maxint-1

Gary




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