sparse_meshgrid

odl.sparse_meshgrid(*x)

Make a sparse meshgrid by adding empty dimensions.

Parameters

x1,…,xNarray-like: Input arrays to turn into sparse meshgrid vectors.

Returns

meshgridtuple of numpy.ndarray’s: Sparse coordinate vectors representing an N-dimensional grid.

See Also

numpy.meshgrid : dense or sparse meshgrids

Examples

>>> x, y = [0, 1], [2, 3, 4]
>>> mesh = sparse_meshgrid(x, y)
>>> np.sum(xi for xi in mesh).ravel()  # first axis slowest
array([2, 3, 4, 3, 4, 5])