Re: [Numpy-discussion] howto make from flat array (1-dim) 2-dimensional?

2007-05-14 Thread Christopher Barker 

or:

a=array([1,2,3]).reshape((-1,1))

Darn, I guess there is more than one obvious way to do it!

-Chris


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[Numpy-discussion] howto make from flat array (1-dim) 2-dimensional?

2007-05-13 Thread dmitrey 
i.e. for example from flat array [1, 2, 3] obtain
array([[ 1.],
   [ 2.],
   [ 3.]])

I have numpy v 1.0.1
Thx, D.

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Re: [Numpy-discussion] howto make from flat array (1-dim) 2-dimensional?

2007-05-13 Thread David M. Cooke 
On Sun, May 13, 2007 at 02:36:39PM +0300, dmitrey wrote:
 i.e. for example from flat array [1, 2, 3] obtain
 array([[ 1.],
[ 2.],
[ 3.]])
 
 I have numpy v 1.0.1
 Thx, D.

Use newaxis:

In [1]: a = array([1., 2., 3.])
In [2]: a
Out[2]: array([ 1.,  2.,  3.])
In [3]: a[:,newaxis]
Out[3]: 
array([[ 1.],
   [ 2.],
   [ 3.]])
In [4]: a[newaxis,:]
Out[4]: array([[ 1.,  2.,  3.]])

When newaxis is used as an index, a new axis of dimension 1 is added.

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Re: [Numpy-discussion] howto make from flat array (1-dim) 2-dimensional?

2007-05-13 Thread Darren Dale 
On Sunday 13 May 2007 7:36:39 am dmitrey wrote:
 i.e. for example from flat array [1, 2, 3] obtain
 array([[ 1.],
[ 2.],
[ 3.]])

a=array([1,2,3])
a.shape=(len(a),1)
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Re: [Numpy-discussion] howto make from flat array (1-dim) 2-dimensional?

2007-05-13 Thread Stefan van der Walt 
On Sun, May 13, 2007 at 07:46:47AM -0400, Darren Dale wrote:
 On Sunday 13 May 2007 7:36:39 am dmitrey wrote:
  i.e. for example from flat array [1, 2, 3] obtain
  array([[ 1.],
 [ 2.],
 [ 3.]])
 
 a=array([1,2,3])
 a.shape=(len(a),1)

Or just

a.shape = (-1,1)

Cheers
Stéfan
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