On Wed, Jun 1, 2011 at 22:06, Travis Oliphant <[email protected]> wrote: > > On May 31, 2011, at 8:08 PM, Charles R Harris wrote:
>> 2) Ufunc fadd (nanadd?) Treats nan as zero in addition. Should make a faster >> version of nansum possible. > > +0 --- Some discussion at the data array summit led to the view that > supporting nan-enabled dtypes (nanfloat64, nanfloat32, nanint64) might be a > better approach for nan-handling. This needs more discussion, but useful to > mention in this context. Actually, these are completely orthogonal to Chuck's proposal. The NA-enabled dtypes (*not* NaN-enabled dtypes) would have (x + NA) == NA, just like R. fadd() would be useful for other things. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco _______________________________________________ NumPy-Discussion mailing list [email protected] http://mail.scipy.org/mailman/listinfo/numpy-discussion
