def __rmul__(self, other: Union[Number, 'Map']) -> 'MapComp':
if isinstance(other, Number):
from pycsou.linop.base import HomothetyMap
other = HomothetyMap(constant=other, size=self.shape[0])
if isinstance(other, Map):
return MapComp(other, self)
else:
raise NotImplementedError
def __mul__(self, other: Union[Number, 'Map', 'DifferentiableMap', np.ndarray]) \
-> Union['MapComp', 'DiffMapComp', np.ndarray]:
if isinstance(other, Number):
from pycsou.linop.base import HomothetyMap
other = HomothetyMap(constant=other, size=self.shape[1])
if isinstance(other, np.ndarray):
return self(other)
elif isinstance(other, DifferentiableMap):
return DiffMapComp(self, other)
elif isinstance(other, Map):
return MapComp(self, other)
else:
raise NotImplementedError
def __rmul__(
self, other: Union['Map', 'DifferentiableMap', 'LinearOperator',
Number]
) -> Union['MapSum', 'DiffMapSum', 'LinOpSum']:
if isinstance(other, Number):
from pycsou.linop.base import HomothetyMap
other = HomothetyMap(constant=other, size=self.shape[0])
if isinstance(other, LinearOperator):
return LinOpComp(other, self)
elif isinstance(other, DifferentiableMap):
return DiffMapComp(other, self)
elif isinstance(other, Map):
return MapComp(other, self)
else:
raise NotImplementedError
def __mul__(
self, other: Union[Number, 'Map',
np.ndarray]) -> Union['MapComp', np.ndarray]:
r"""
Multiply a map with another map, a scalar, or an array.
The behaviour of this method depends on the type of ``other``:
* If ``other`` is another map, then it returns the composition of the map with ``other``.
* If ``other`` is an array with compatible shape, then it calls the map on ``other``.
* If ``other`` is a scalar, then it multiplies the map with this scalar.
Parameters
----------
other: Union[Number, 'Map', np.ndarray]
Scalar, map or array with which to multiply.
Returns
-------
:py:class:`~pycsou.core.map.MapComp`, np.ndarray
Composition of the map with another map, or product with a scalar or array.
Raises
------
NotImplementedError
If ``other`` is not a scalar, a map or an array.
See Also
--------
:py:func:`~pycsou.core.map.Map.__matmul__`, :py:func:`~pycsou.core.map.Map.__rmul__`
"""
if isinstance(other, Number):
from pycsou.linop.base import HomothetyMap
other = HomothetyMap(constant=other, size=self.shape[1])
if isinstance(other, np.ndarray):
return self(other)
elif isinstance(other, Map):
return MapComp(self, other)
else:
raise NotImplementedError