SeparableSum.getitem

SeparableSum.__getitem__(indices)[source]

Return self[index].

Parameters

indicesindex expression: Object determining which parts of the sum to extract.

Returns

subfunctionalFunctional or SeparableSum: Functional corresponding to the given indices.

Examples

>>> space = odl.rn(3)
>>> l1 = odl.functionals.L1Norm(space)
>>> l2 = odl.functionals.L2Norm(space)
>>> f_sum = odl.functionals.SeparableSum(l1, l2, 2*l2)

Extract single sub-functional via integer index:

>>> f_sum[0]
L1Norm(rn(3))

Extract subset of functionals:

>>> f_sum[:2]
SeparableSum(L1Norm(rn(3)), L2Norm(rn(3)))