Skip to content
GitLab
Menu
Projects
Groups
Snippets
Help
Help
Support
Community forum
Keyboard shortcuts
?
Submit feedback
Contribute to GitLab
Sign in
Toggle navigation
Menu
Open sidebar
ift
NIFTy
Commits
23354fee
Commit
23354fee
authored
Jul 26, 2018
by
Martin Reinecke
Browse files
tweaks
parent
610a2f7c
Changes
1
Hide whitespace changes
Inline
Side-by-side
demos/getting_started_2b.py
View file @
23354fee
...
...
@@ -20,12 +20,16 @@ import nifty5 as ift
import
numpy
as
np
def
myexp
(
lin
):
tmp
=
ift
.
exp
(
lin
.
val
)
return
ift
.
Linearization
(
tmp
,
ift
.
makeOp
(
tmp
)
*
lin
.
jac
)
if
isinstance
(
lin
,
ift
.
Linearization
):
tmp
=
ift
.
exp
(
lin
.
val
)
return
ift
.
Linearization
(
tmp
,
ift
.
makeOp
(
tmp
)
*
lin
.
jac
)
return
ift
.
exp
(
lin
)
def
mylog
(
lin
):
tmp
=
ift
.
log
(
lin
.
val
)
return
ift
.
Linearization
(
tmp
,
ift
.
makeOp
(
1.
/
lin
.
val
)
*
lin
.
jac
)
if
isinstance
(
lin
,
ift
.
Linearization
):
tmp
=
ift
.
log
(
lin
.
val
)
return
ift
.
Linearization
(
tmp
,
ift
.
makeOp
(
1.
/
lin
.
val
)
*
lin
.
jac
)
return
ift
.
log
(
lin
)
class
GaussianEnergy2
(
ift
.
Operator
):
def
__init__
(
self
,
mean
=
None
,
covariance
=
None
):
...
...
@@ -57,8 +61,6 @@ class MyHamiltonian(ift.Operator):
super
(
MyHamiltonian
,
self
).
__init__
()
self
.
_lh
=
lh
self
.
_prior
=
GaussianEnergy2
()
pvar
=
ift
.
Linearization
.
make_var
(
position
)
self
.
_res
=
self
.
_lh
(
pvar
)
+
self
.
_prior
(
pvar
)
def
__call__
(
self
,
x
):
return
self
.
_lh
(
x
)
+
self
.
_prior
(
x
)
...
...
@@ -147,7 +149,7 @@ if __name__ == '__main__':
d_space
=
R
.
target
[
0
]
lamb
=
lambda
inp
:
R
(
sky
(
inp
))
mock_position
=
ift
.
from_random
(
'normal'
,
domain
)
data
=
lamb
(
ift
.
Linearization
.
make_var
(
mock_position
)
).
val
data
=
lamb
(
mock_position
)
data
=
np
.
random
.
poisson
(
data
.
to_global_data
().
astype
(
np
.
float64
))
data
=
ift
.
Field
.
from_global_data
(
d_space
,
data
)
...
...
@@ -166,7 +168,7 @@ if __name__ == '__main__':
H
,
convergence
=
minimizer
(
H
)
# Plot results
result_sky
=
sky
(
ift
.
Linearization
.
make_var
(
H
.
position
)
).
val
result_sky
=
sky
(
H
.
position
)
ift
.
plot
(
result_sky
)
ift
.
plot_finish
()
# FIXME PLOTTING
Write
Preview
Supports
Markdown
0%
Try again
or
attach a new file
.
Attach a file
Cancel
You are about to add
0
people
to the discussion. Proceed with caution.
Finish editing this message first!
Cancel
Please
register
or
sign in
to comment