[Numpy-discussion] A couple more Numeric incompatibilitiesand a possible bug
Todd Miller
jmiller at stsci.edu
Sun Mar 28 03:41:04 CST 2004
On Sat, 2004-03-27 at 01:48, Gary Ruben wrote:
> Actually, this reproduces the problem:
>
> >>> from numarray import *
> >>> from numarray.objects import *
> >>> abs(-1.)
> ObjectArray(1.0)
> >>> abs(-1)
> ObjectArray(1)
>
I'm guessing, but I think you would like to see:
>>> abs(-1.)
1.0
>>> abs(1)
1
If so, this is a bug. Two things are going on:
1) numarray.objects redefines abs()
2) Internally, numarray has a concept of "rank-0" arrays which it uses
to represent scalars. Apparently, numarray.objects lacks the extra
code to filter rank-0 arrays out (convert back to scalars) as is done
with numerical arrays.
I logged this as a bug on Source Forge and it will be fixed for 1.0.
Regards,
Todd
--
Todd Miller <jmiller at stsci.edu>
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