[Numpy-discussion] What am I missing about concatenate?

Christopher Barker Chris.Barker at noaa.gov
Thu Jun 1 11:33:02 CDT 2006


I want to take two (2,) arrays and put them together into one (2,2) 
array. I thought one of these would work:

 >>> N.concatenate(((1,2),(3,4)),0)
array([1, 2, 3, 4])
 >>> N.concatenate(((1,2),(3,4)),1)
array([1, 2, 3, 4])

Is this the best I can do?

 >>> N.concatenate(((1,2),(3,4))).reshape(2,2)
array([[1, 2],
        [3, 4]])

Is it because the arrays I'm putting together are rank-1?

 >>> N.__version__
'0.9.6'

-Chris





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Christopher Barker, Ph.D.
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