numpy.unpackbits¶
- numpy.unpackbits(myarray, axis=None)¶
Unpacks elements of a uint8 array into a binary-valued output array.
Each element of myarray represents a bit-field that should be unpacked into a binary-valued output array. The shape of the output array is either 1-D (if axis is None) or the same shape as the input array with unpacking done along the axis specified.
Parameters: myarray : ndarray, uint8 type
Input array.
axis : int, optional
Unpacks along this axis.
Returns: unpacked : ndarray, uint8 type
The elements are binary-valued (0 or 1).
See also
- packbits
- Packs the elements of a binary-valued array into bits in a uint8 array.
Examples
>>> a = np.array([[2], [7], [23]], dtype=np.uint8) >>> a array([[ 2], [ 7], [23]], dtype=uint8) >>> b = np.unpackbits(a, axis=1) >>> b array([[0, 0, 0, 0, 0, 0, 1, 0], [0, 0, 0, 0, 0, 1, 1, 1], [0, 0, 0, 1, 0, 1, 1, 1]], dtype=uint8)