[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 13:29:46 CDT 2006


And on my Mac:

OS-X 10.4.*, PPC, universal python 2.4.3:

 >>> import numarray as na
 >>> na.__version__
'1.5.1'
 >>> bbb=na.zeros((2,3,3), na.Float32)
 >>> bbb[0,:,:]=1
 >>> bbb[1,:,:]=2
 >>> ccc=na.transpose(bbb,(1,0,2))
 >>> d=na.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.
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Chris.Barker at noaa.gov




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