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ift
NIFTy
Commits
d648bbff
Commit
d648bbff
authored
Aug 16, 2018
by
Martin Reinecke
Browse files
Merge remotetracking branch 'origin/NIFTy_5' into misc_op_work
parents
67a152ea
e7f2378c
Changes
1
Hide whitespace changes
Inline
Sidebyside
nifty5/operators/domain_distributor.py
View file @
d648bbff
...
...
@@ 28,11 +28,26 @@ from .linear_operator import LinearOperator
class
DomainDistributor
(
LinearOperator
):
"""A linear operator which broadcasts a field to a larger domain.
This DomainDistributor broadcasts a field which is defined on a
DomainTuple to a DomainTuple which contains the former as a subset. The
entries of the field are copied such that they are constant in the
direction of the new spaces.
Parameters

target : Domain, tuple of Domain or DomainTuple
spaces : int or tuple of int
The elements of "target" which are taken as domain.
"""
def
__init__
(
self
,
target
,
spaces
):
self
.
_target
=
DomainTuple
.
make
(
target
)
self
.
_spaces
=
utilities
.
parse_spaces
(
spaces
,
len
(
self
.
_target
))
self
.
_domain
=
[
tgt
for
i
,
tgt
in
enumerate
(
self
.
_target
)
if
i
in
self
.
_spaces
]
self
.
_domain
=
[
tgt
for
i
,
tgt
in
enumerate
(
self
.
_target
)
if
i
in
self
.
_spaces
]
self
.
_domain
=
DomainTuple
.
make
(
self
.
_domain
)
self
.
_capability
=
self
.
TIMES

self
.
ADJOINT_TIMES
...
...
@@ 47,5 +62,5 @@ class DomainDistributor(LinearOperator):
ldat
=
np
.
broadcast_to
(
ldat
.
reshape
(
shp
),
self
.
_target
.
local_shape
)
return
Field
.
from_local_data
(
self
.
_target
,
ldat
)
else
:
return
x
.
sum
(
[
s
for
s
in
range
(
len
(
x
.
domain
))
if
s
not
in
self
.
_spaces
])
return
x
.
sum
(
[
s
for
s
in
range
(
len
(
x
.
domain
))
if
s
not
in
self
.
_spaces
])
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