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ift
NIFTy
Commits
03577165
Commit
03577165
authored
Feb 19, 2018
by
Martin Reinecke
Browse files
demo tweaks
parent
c3627c40
Changes
2
Hide whitespace changes
Inline
Side-by-side
demos/critical_filtering.py
View file @
03577165
import
nifty4
as
ift
from
nifty4.library.nonlinearities
import
Linear
from
nifty4.library.nonlinearities
import
Linear
,
Tanh
,
Exponential
import
numpy
as
np
np
.
random
.
seed
(
42
)
...
...
@@ -31,7 +31,7 @@ if __name__ == "__main__":
p_space
=
ift
.
PowerSpace
(
h_space
,
binbounds
=
ift
.
PowerSpace
.
useful_binbounds
(
h_space
,
logarithmic
=
True
))
s_spec
=
ift
.
Field
.
full
(
p_space
,
1
.
)
s_spec
=
ift
.
Field
.
full
(
p_space
,
1
e-5
)
# Choosing the prior correlation structure and defining
# correlation operator
p
=
ift
.
PS_field
(
p_space
,
p_spec
)
...
...
@@ -44,6 +44,7 @@ if __name__ == "__main__":
# Choosing the measurement instrument
# Instrument = SmoothingOperator(s_space, sigma=0.01)
mask
=
np
.
ones
(
s_space
.
shape
)
#mask[6000:8000] = 0.
mask
[
30
:
70
,
30
:
70
]
=
0.
mask
=
ift
.
Field
.
from_global_data
(
s_space
,
mask
)
...
...
@@ -74,6 +75,13 @@ if __name__ == "__main__":
t0
=
ift
.
Field
.
full
(
p_space
,
-
4.
)
power0
=
Distributor
.
times
(
ift
.
exp
(
0.5
*
t0
))
plotdict
=
{
"colormap"
:
"Planck-like"
}
zmin
=
true_sky
.
min
()
zmax
=
true_sky
.
max
()
ift
.
plot
(
true_sky
,
title
=
"True sky"
,
name
=
"true_sky.png"
,
**
plotdict
)
ift
.
plot
(
MeasurementOperator
.
adjoint_times
(
d
),
title
=
"Data"
,
name
=
"data.png"
,
**
plotdict
)
IC1
=
ift
.
GradientNormController
(
name
=
"IC1"
,
iteration_limit
=
100
,
tol_abs_gradnorm
=
1e-3
)
LS
=
ift
.
LineSearchStrongWolfe
(
c2
=
0.02
)
...
...
@@ -111,9 +119,8 @@ if __name__ == "__main__":
# excitation monopole to 1
m0
,
t0
=
adjust_zero_mode
(
m0
,
t0
)
plotdict
=
{
"colormap"
:
"Planck-like"
}
ift
.
plot
(
true_sky
,
title
=
"True sky"
,
name
=
"true_sky.png"
,
**
plotdict
)
ift
.
plot
(
nonlinearity
(
HT
(
power0
*
m0
)),
title
=
"Reconstructed sky"
,
name
=
"reconstructed_sky.png"
,
**
plotdict
)
ift
.
plot
(
MeasurementOperator
.
adjoint_times
(
d
),
title
=
"Data"
,
name
=
"data.png"
,
**
plotdict
)
name
=
"reconstructed_sky.png"
,
zmin
=
zmin
,
zmax
=
zmax
,
**
plotdict
)
ymin
=
np
.
min
(
p
.
to_global_data
())
ift
.
plot
([
ift
.
exp
(
t0
),
p
],
title
=
"Power spectra"
,
name
=
"ps.png"
,
ymin
=
ymin
,
**
plotdict
)
demos/nonlinear_critical_filter.py
View file @
03577165
...
...
@@ -113,7 +113,9 @@ if __name__ == "__main__":
# excitation monopole to 1
m0
,
t0
=
adjust_zero_mode
(
m0
,
t0
)
ift
.
plot
(
true_sky
)
plotdict
=
{
"colormap"
:
"Planck-like"
}
ift
.
plot
(
true_sky
,
name
=
"true_sky.png"
,
**
plotdict
)
ift
.
plot
(
nonlinearity
(
HT
(
power0
*
m0
)),
title
=
'reconstructed_sky'
)
ift
.
plot
(
MeasurementOperator
.
adjoint_times
(
d
))
name
=
"reconstructed_sky.png"
,
**
plotdict
)
ift
.
plot
(
MeasurementOperator
.
adjoint_times
(
d
),
name
=
"data.png"
,
**
plotdict
)
ift
.
plot
([
ift
.
exp
(
t0
),
p
],
name
=
"ps.png"
)
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