OperatorLeftScalarMult¶

class odl.operator.operator.OperatorLeftScalarMult(*args, **kwargs)[source]¶

Bases: Operator

Expression type for the operator left scalar multiplication.

OperatorLeftScalarMult(op, s)(x) == s * op(x)

The scalar multiplication is well-defined only if op.range is a LinearSpace.

Attributes:

adjoint: Adjoint of this operator.
domain: Set of objects on which this operator can be evaluated.
inverse: Inverse of this operator.
is_functional: True if this operator's range is a Field.
is_linear: True if this operator is linear.
operator: The operator part of this multiplication.
range: Set in which the result of an evaluation of this operator lies.
scalar: The scalar part of this multiplication.

Methods

`__call__`(x[, out])	Return `self(x[, out, **kwargs])`.
`derivative`(x)	Return the derivative at `x`.
`norm`([estimate])	Return the operator norm of this operator.

__init__(operator, scalar)[source]¶

Initialize a new OperatorLeftScalarMult instance.

Parameters:

operatorOperator: Operator in the scalar multiplication. Its range must be a LinearSpace or Field.
scalaroperator.range.field element: A real or complex number, depending on the field of the range.

Examples

>>> space = odl.rn(3)
>>> operator = odl.IdentityOperator(space)
>>> left_mul_op = OperatorLeftScalarMult(operator, 3)
>>> left_mul_op([1, 2, 3])
rn(3).element([ 3.,  6.,  9.])