[Numpy-discussion] numarray bug: dot product between 2x2 and 3x2x3 on Mac different from PC
Christopher Barker
Chris.Barker at noaa.gov
Mon Jul 17 14:24:34 EDT 2006
Sebastian Haase wrote:
> Hi!
> This is what I got:
> Can someone confirm this ?
This is what I get on Linux (ix86, Fedora core4, python 2.4.3)
>>> import numarray as na
>>> na.__version__
'1.5.0'
>>> bbb=na.zeros((2,3,3), na.Float32)
>>> bbb[0,:,:]=1
>>> bbb[1,:,:]=2
>>> bbb
array([[[ 1., 1., 1.],
[ 1., 1., 1.],
[ 1., 1., 1.]],
[[ 2., 2., 2.],
[ 2., 2., 2.],
[ 2., 2., 2.]]], type=Float32)
>>> ccc=na.transpose(bbb,(1,0,2))
>>> ccc
array([[[ 1., 1., 1.],
[ 2., 2., 2.]],
[[ 1., 1., 1.],
[ 2., 2., 2.]],
[[ 1., 1., 1.],
[ 2., 2., 2.]]], type=Float32)
>>> d=na.array([[1,0],[0,1]])
>>> d
array([[1, 0],
[0, 1]])
>>> na.dot(d,ccc)
array([[[ 1., 1., 1.],
[ 2., 2., 2.],
[ 1., 1., 1.]],
[[ 2., 2., 2.],
[ 1., 1., 1.],
[ 2., 2., 2.]]], type=Float32)
>>>
--
Christopher Barker, Ph.D.
Oceanographer
NOAA/OR&R/HAZMAT (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception
Chris.Barker at noaa.gov
More information about the NumPy-Discussion
mailing list