Numpy 1.11
Numpy 1.11
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numpy.ma.identity()

numpy.ma.identity

numpy.ma.identity(n, dtype=None) =

Return the identity array.

The identity array is a square array with ones on the main diagonal.

Parameters:

n : int

Number of rows (and columns) in n x n output.

dtype : data-type, optional

Data-type of the output. Defaults to float.
Returns:

out : ndarray

n x n array with its main diago