cf.Data.outerproduct

Data.outerproduct(e, i=False)

Compute the outer product with another data array.

The axes of result will be the combined axes of the two input arrays:

>>> d.outerproduct(e).ndim == d.ndim + e.ndim
True
>>> d.outerproduct(e).shape == d.shape + e.shape
True

Parameters :

e : data-like

The data array with which to form the outer product.

i : bool, optional

If True then update the data array in place. By default a new data array is created.

Returns :

out : cf.Data

Examples

>>> d = cf.Data([1, 2, 3], 'metre')
>>> o = d.outerproduct([4, 5, 6, 7])
>>> o
<CF Data: [[4, ..., 21]] m>
>>> print o.array
[[ 4  5  6  7]
 [ 8 10 12 14]
 [12 15 18 21]]

>>> e = cf.Data([[4, 5, 6, 7], [6, 7, 8, 9]], 's-1')
>>> o = d.outerproduct(e)
>>> o
<CF Data: [[[4, ..., 27]]] m.s-1>
>>> print d.shape, e.shape, o.shape
(3,) (2, 4) (3, 2, 4)
>>> print o.array
[[[ 4  5  6  7]
  [ 6  7  8  9]]
 [[ 8 10 12 14]
  [12 14 16 18]]
 [[12 15 18 21]
  [18 21 24 27]]]