statsmodels.tools.tools.fullrank¶
-
statsmodels.tools.tools.
fullrank
(x, r=None)[source]¶ 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.