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gcosmo2giso
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Created
Sun, Mar 16, 04:32
Size
3 KB
Mime Type
text/x-python
Expires
Tue, Mar 18, 04:32 (2 d)
Engine
blob
Format
Raw Data
Handle
24960159
Attached To
rGTOOLS Gtools
gcosmo2giso
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#!/usr/bin/env python
import
Ptools
as
pt
from
optparse
import
OptionParser
from
pNbody
import
*
import
sys
from
scipy
import
optimize
from
numpy
import
*
def
parse_options
():
usage
=
"usage: %prog [options] file"
parser
=
OptionParser
(
usage
=
usage
)
parser
=
pt
.
add_ftype_options
(
parser
)
parser
.
add_option
(
"-o"
,
action
=
"store"
,
dest
=
"outputfile"
,
type
=
"string"
,
default
=
None
,
help
=
"output file name"
,
metavar
=
" STRING"
)
parser
.
add_option
(
"--a0"
,
action
=
"store"
,
dest
=
"a0"
,
type
=
"float"
,
default
=
1.
,
help
=
"initial scaling factor"
,
metavar
=
" FLOAT"
)
parser
.
add_option
(
"--Omega0"
,
action
=
"store"
,
dest
=
"Omega0"
,
type
=
"float"
,
default
=
0.24
,
help
=
"Omega0"
,
metavar
=
" FLOAT"
)
parser
.
add_option
(
"--OmegaLambda"
,
action
=
"store"
,
dest
=
"OmegaLambda"
,
type
=
"float"
,
default
=
0.76
,
help
=
"OmegaLambda"
,
metavar
=
" FLOAT"
)
parser
.
add_option
(
"--param1"
,
action
=
"store"
,
dest
=
"GadgetParameterFile1"
,
type
=
"string"
,
default
=
None
,
help
=
"Gadget parameter file 1"
,
metavar
=
" FILE"
)
parser
.
add_option
(
"--param2"
,
action
=
"store"
,
dest
=
"GadgetParameterFile2"
,
type
=
"string"
,
default
=
None
,
help
=
"Gadget parameter file 2"
,
metavar
=
" FILE"
)
(
options
,
args
)
=
parser
.
parse_args
()
files
=
args
return
files
,
options
###################################################
# main
###################################################
files
,
opt
=
parse_options
()
# read file
file
=
files
[
0
]
nb
=
Nbody
(
file
,
ftype
=
opt
.
ftype
)
a
=
nb
.
atime
# unit options
unit_params1
=
io
.
read_params
(
opt
.
GadgetParameterFile1
)
unit_params2
=
io
.
read_params
(
opt
.
GadgetParameterFile2
)
local_units_2
=
units
.
Set_SystemUnits_From_Params
(
unit_params2
)
if
unit_params2
.
has_key
(
'HubbleParam'
):
local_units_2
.
CorrectFromHubbleParameter
(
unit_params2
[
'HubbleParam'
])
# set some parameters
Hubble
=
ctes
.
HUBBLE
.
into
(
nb
.
localsystem_of_units
)
cosmo
.
Omega0
=
unit_params1
[
'Omega0'
]
cosmo
.
OmegaLambda
=
unit_params1
[
'OmegaLambda'
]
cosmo
.
HubbleParam
=
unit_params1
[
"HubbleParam"
]
cosmo
.
Hubble
=
Hubble
cosmo
.
setdefault
()
# this set defaultpars
# compute some factors
Ha
=
cosmo
.
Hubble_a
(
a
,
pars
=
cosmo
.
defaultpars
)
pos
=
nb
.
pos
vel
=
nb
.
vel
for
ar
in
nb
.
get_list_of_array
():
if
ar
==
"pos"
:
#print "pos"
nb
.
pos
=
pos
*
a
elif
ar
==
"vel"
:
#print "vel",
nb
.
vel
=
vel
*
sqrt
(
a
)
+
pos
*
a
*
Ha
elif
ar
==
"mass"
:
#print "mass"
pass
elif
ar
==
"u"
:
#print "u"
pass
elif
ar
==
"rho"
:
#print "rho"
nb
.
rho
=
nb
.
rho
/
a
**
3
elif
ar
==
"rsp"
:
#print "rsp"
nb
.
rsp
=
nb
.
rsp
*
a
elif
ar
==
"tpe"
:
pass
elif
ar
==
"num"
:
pass
elif
ar
==
"minit"
:
#print "minit"
pass
else
:
print
"skipping
%s
"
%
ar
# compute the time
hubbleparam
=
unit_params1
[
"HubbleParam"
]
omegalambda
=
unit_params1
[
"OmegaLambda"
]
omega0
=
unit_params1
[
"Omega0"
]
units
=
local_units_2
.
UnitTime
funit
=
nb
.
localsystem_of_units
.
convertionFactorTo
(
units
)
Hubble
=
ctes
.
HUBBLE
.
into
(
nb
.
localsystem_of_units
)
pars
=
{
"Hubble"
:
Hubble
,
"HubbleParam"
:
hubbleparam
,
"OmegaLambda"
:
omegalambda
,
"Omega0"
:
omega0
}
age
=
cosmo
.
CosmicTime_a
(
nb
.
atime
,
pars
)
/
hubbleparam
*
funit
print
"--------------------------------------"
print
"a=
%g
-> t=
%g
"
%
(
nb
.
atime
,
age
)
print
"--------------------------------------"
nb
.
atime
=
age
if
opt
.
outputfile
!=
None
:
# kill comobile flag
nb
.
comovingintegration
=
False
nb
.
omega0
=
0
nb
.
omegalambda
=
0
nb
.
rename
(
opt
.
outputfile
)
nb
.
nzero
=
None
nb
.
massarr
=
None
nb
.
write
()
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