numpy.unpackbits¶

numpy.unpackbits(myarray,axis=None)¶

Unpacks elements of a uint8 array into a binary-valued output array.

Each element ofmyarray represents a bit-field that should be unpackedinto a binary-valued output array. The shape of the output array is either1-D (ifaxis is None) or the same shape as the input array with unpackingdone along the axis specified.

Parameters:	myarray:ndarray, uint8 type Input array. axis:int, optional The dimension over which bit-unpacking is done.None implies unpacking the flattened array.
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)>>>aarray([[ 2],       [ 7],       [23]], dtype=uint8)>>>b=np.unpackbits(a,axis=1)>>>barray([[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)