Return an array whose column span is the same as x.
- Parameters
- x
ndarray
The array to adjust, 2d.
- r
int
, optional
The rank of x. If not provided, determined by np.linalg.matrix_rank.
- Returns
ndarray
The array adjusted to have full rank.
Notes
If the rank of x is known it can be specified as r – no check
is made to ensure that this really is the rank of x.