array manipulation-

[Gregory Ewing]

Aram Ter-Sarkissov wrote:

> I have an array (say, mat=rand(3,5)) from which I 'pull out' a row
> (say, s1=mat[1,]). The problem is, the shape of this row s1 is not
> [1,5], as I would expect, but rather [5,], which means that I can't,
> for example, concateante mat and s1 rowwise.

Use a 2D slice:

 >>> a = array([[1,2],[3,4]])

 >>> a
array([[1, 2],
        [3, 4]])

 >>> b = a[1:2,:]

 >>> b
array([[3, 4]])

 >>> b.shape
(1, 2)

-- 
Greg