sparse_diff

pygam.penalties.sparse_diff(array, n=1, axis=-1)

A ported sparse version of np.diff. Uses recursion to compute higher order differences.

Parameters:

arraysparse array

nint, default: 1

differencing order

axisint, default: -1

axis along which differences are computed

Returns:

diff_arraysparse array

same shape as input array, but ‘axis’ dimension is smaller by ‘n’.