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fftfreq.py
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Created
Thu, Jun 6, 23:29
Size
690 B
Mime Type
text/x-python
Expires
Sat, Jun 8, 23:29 (1 d, 23 h)
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blob
Format
Raw Data
Handle
18133123
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rTAMAAS tamaas
fftfreq.py
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from
__future__
import
division
__author__
=
"Lucas Frérot"
import
numpy
as
np
from
numpy.fft
import
fftfreq
def
frequencies1D
(
frequencies
):
n
=
len
(
frequencies
)
frequencies
[:]
=
n
*
fftfreq
(
n
)
def
assign2DFrequencies
(
qx
,
qy
,
frequencies
):
qx
,
qy
=
np
.
meshgrid
(
qx
,
qy
,
indexing
=
'ij'
)
frequencies
[:,
:,
0
]
=
qx
frequencies
[:,
:,
1
]
=
qy
def
frequencies2D
(
frequencies
):
n
=
frequencies
.
shape
qx
=
fftfreq
(
n
[
0
])
*
n
[
0
]
qy
=
fftfreq
(
n
[
1
])
*
n
[
1
]
assign2DFrequencies
(
qx
,
qy
,
frequencies
)
def
hfrequencies2D
(
frequencies
):
n
=
frequencies
.
shape
qx
=
fftfreq
(
n
[
0
])
*
n
[
0
]
qy
=
np
.
arange
(
n
[
1
])
assign2DFrequencies
(
qx
,
qy
,
frequencies
)
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