本文整理汇总了Python中classy.Class.get_current_derived_parameters方法的典型用法代码示例。如果您正苦于以下问题：Python Class.get_current_derived_parameters方法的具体用法？Python Class.get_current_derived_parameters怎么用？Python Class.get_current_derived_parameters使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类classy.Class的用法示例。
在下文中一共展示了Class.get_current_derived_parameters方法的11个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_class_setup
# 需要导入模块: from classy import Class [as 别名]
# 或者: from classy.Class import get_current_derived_parameters [as 别名]
def test_class_setup():
cosmology = astropy.cosmology.Planck13
assert cosmology.Om0 == cosmology.Odm0 + cosmology.Ob0
assert 1 == (cosmology.Om0 + cosmology.Ode0 + cosmology.Ok0 +
cosmology.Ogamma0 + cosmology.Onu0)
class_parameters = get_class_parameters(cosmology)
try:
from classy import Class
cosmo = Class()
cosmo.set(class_parameters)
cosmo.compute()
assert cosmo.h() == cosmology.h
assert cosmo.T_cmb() == cosmology.Tcmb0.value
assert cosmo.Omega_b() == cosmology.Ob0
# Calculate Omega(CDM)_0 two ways:
assert abs((cosmo.Omega_m() - cosmo.Omega_b()) -
(cosmology.Odm0 - cosmology.Onu0)) < 1e-8
assert abs(cosmo.Omega_m() - (cosmology.Om0 - cosmology.Onu0)) < 1e-8
# CLASS calculates Omega_Lambda itself so this is a non-trivial test.
calculated_Ode0 = cosmo.get_current_derived_parameters(
['Omega_Lambda'])['Omega_Lambda']
assert abs(calculated_Ode0 - (cosmology.Ode0 + cosmology.Onu0)) < 1e-5
cosmo.struct_cleanup()
cosmo.empty()
except ImportError:
pass示例2: classy
# 需要导入模块: from classy import Class [as 别名]
# 或者: from classy.Class import get_current_derived_parameters [as 别名]
class classy(SlikPlugin):
"""
Plugin for CLASS.
Credit: Brent Follin, Teresa Hamill, Andy Scacco
"""
def __init__(self):
super(classy,self).__init__()
try:
from classy import Class
except ImportError:
raise Exception("Failed to import CLASS python wrapper 'Classy'.")
self.model = Class()
def __call__(self,
**kwargs):
self.model.set(**kwargs)
self.model.compute()
ell = arange(l_max_scalar+1)
self.cmb_result = {'cl_%s'%x:(self.model.lensed_cl(l_max_scalar)[x.lower()])*Tcmb**2*1e12*ell*(ell+1)/2/pi
for x in ['TT','TE','EE','BB','PP','TP']}
self.model.struct_cleanup()
self.model.empty()
return self.cmb_result
def get_bao_observables(self, z):
return {'H':self.model.Hubble(z),
'D_A':self.model.angular_distance(z),
'c':1.0,
'r_d':(self.model.get_current_derived_parameters(['rs_rec']))['rs_rec']}示例3: classy
# 需要导入模块: from classy import Class [as 别名]
# 或者: from classy.Class import get_current_derived_parameters [as 别名]
#.........这里部分代码省略.........
'omnuh2':'omega_ncdm',
'tau':'tau_reio',
'H0':'H0',
'massive_neutrinos':'N_ncdm',
'massless_neutrinos':'N_ur',
'Yp':'YHe',
'pivot_scalar':'k_pivot',
'omk':'Omega_k',
'l_max_scalar':'l_max_scalars',
'l_max_tensor':'l_max_tensors',
'Tcmb':'T_cmb'
}
def __init__(self):
super(classy,self).__init__()
try:
from classy import Class
except ImportError:
raise Exception("Failed to import CLASS python wrapper 'Classy'.")
self.model = Class()
#def __call__(self,
# **kwargs):
# d={}
# for k, v in kwargs.iteritems():
# if k in self.name_mapping and v is not None:
# d[self.name_mapping[k]]=v
# else:
# d[k]=v
#def __call__(self,
#ombh2,
#omch2,
#H0,
#As,
#ns,
#custom1,
#custom2,
#custom3,
#tau,
#w=None,
#r=None,
#nrun=None,
#omk=0,
#Yp=None,
#Tcmb=2.7255,
#massless_neutrinos=3.046,
#l_max_scalar=3000,
#l_max_tensor=3000,
#pivot_scalar=0.05,
#outputs=[],
#**kwargs):
#print kwargs
def __call__(self,**kwargs):
#print kwargs
#print kwargs['classparamlist']
#print kwargs['d']
d={}
for k,v in kwargs.iteritems():
if k in kwargs['classparamlist']:
if k in self.name_mapping and v is not None:
d[self.name_mapping[k]]=v
else:
d[k]=v
#d['P_k_ini type']='external_Pk'
#d['modes'] = 's,t'
self.model.set(**d)
l_max = d['l_max_scalars']
Tcmb = d['T_cmb']
#print l_max
#print d
self.model.compute()
ell = arange(l_max+1)
self.cmb_result = {'cl_%s'%x:(self.model.lensed_cl(l_max)[x.lower()])*Tcmb**2*1e12*ell*(ell+1)/2/pi
for x in ['TT','TE','EE','BB','PP','TP']}
self.model.struct_cleanup()
self.model.empty()
return self.cmb_result
def get_bao_observables(self, z):
return {'H':self.model.Hubble(z),
'D_A':self.model.angular_distance(z),
'c':1.0,
'r_d':(self.model.get_current_derived_parameters(['rs_rec']))['rs_rec']}示例4: classy
# 需要导入模块: from classy import Class [as 别名]
# 或者: from classy.Class import get_current_derived_parameters [as 别名]
class classy(SlikPlugin):
"""
Plugin for CLASS.
Credit: Brent Follin, Teresa Hamill, Andy Scacco
"""
#{cosmoslik name : class name} - This needs to be done even for variables with the same name (because of for loop in self.model.set)!
name_mapping = {'As':'A_s',
'ns':'n_s',
'r':'r',
'phi0':'custom1',
'm6':'custom2',
'nt':'n_t',
'ombh2':'omega_b',
'omch2':'omega_cdm',
'omnuh2':'omega_ncdm',
'tau':'tau_reio',
'H0':'H0',
'massive_neutrinos':'N_ncdm',
'massless_neutrinos':'N_ur',
'Yp':'YHe',
'pivot_scalar':'k_pivot',
}
def __init__(self):
super(classy,self).__init__()
try:
from classy import Class
except ImportError:
raise Exception("Failed to import CLASS python wrapper 'Classy'.")
self.model = Class()
def __call__(self,
ombh2,
omch2,
H0,
As,
ns,
phi0,
m6,
tau,
w=None,
r=None,
nrun=None,
omk=0,
Yp=None,
Tcmb=2.7255,
massless_neutrinos=3.046,
l_max_scalar=3000,
l_max_tensor=3000,
pivot_scalar=0.05,
outputs=[],
**kwargs):
d={self.name_mapping[k]:v for k,v in locals().items()
if k in self.name_mapping and v is not None}
d['P_k_ini type']='external_Pk'
d['modes'] = 's,t'
self.model.set(output='tCl, lCl, pCl',
lensing='yes',
l_max_scalars=l_max_scalar,
command = '../LSODAtesnors/pk',
**d)
self.model.compute()
ell = arange(l_max_scalar+1)
self.cmb_result = {'cl_%s'%x:(self.model.lensed_cl(l_max_scalar)[x.lower()])*Tcmb**2*1e12*ell*(ell+1)/2/pi
for x in ['TT','TE','EE','BB','PP','TP']}
self.model.struct_cleanup()
self.model.empty()
return self.cmb_result
def get_bao_observables(self, z):
return {'H':self.model.Hubble(z),
'D_A':self.model.angular_distance(z),
'c':1.0,
'r_d':(self.model.get_current_derived_parameters(['rs_rec']))['rs_rec']}示例5: TestClass
# 需要导入模块: from classy import Class [as 别名]
# 或者: from classy.Class import get_current_derived_parameters [as 别名]
#.........这里部分代码省略.........
self.assertTrue(setting, "Class failed to initialize with input dict")
cl_list = ["tCl", "lCl", "pCl", "nCl", "sCl"]
# Depending on the cases, the compute should fail or not
should_fail = True
output = self.scenario["output"].split()
for elem in output:
if elem in ["tCl", "pCl"]:
for elem2 in output:
if elem2 == "lCl":
should_fail = False
break
if not should_fail:
self.cosmo.compute()
else:
self.assertRaises(CosmoSevereError, self.cosmo.compute)
return
self.assertTrue(self.cosmo.state, "Class failed to go through all __init__ methods")
if self.cosmo.state:
print "--> Class is ready"
# Depending
if "output" in self.scenario.keys():
# Positive tests
output = self.scenario["output"]
for elem in output.split():
if elem in cl_list:
print "--> testing raw_cl function"
cl = self.cosmo.raw_cl(100)
self.assertIsNotNone(cl, "raw_cl returned nothing")
self.assertEqual(np.shape(cl["tt"])[0], 101, "raw_cl returned wrong size")
if elem == "mPk":
print "--> testing pk function"
pk = self.cosmo.pk(0.1, 0)
self.assertIsNotNone(pk, "pk returned nothing")
# Negative tests of output functions
if not any([elem in cl_list for elem in output.split()]):
print "--> testing absence of any Cl"
self.assertRaises(CosmoSevereError, self.cosmo.raw_cl, 100)
if "mPk" not in self.scenario["output"].split():
print "--> testing absence of mPk"
# args = (0.1, 0)
self.assertRaises(CosmoSevereError, self.cosmo.pk, 0.1, 0)
@parameterized.expand(
itertools.product(("massless", "massive", "both"), ("photons", "massless", "exact"), ("t", "s, t"))
)
def test_tensors(self, scenario, method, modes):
"""Test the new tensor mode implementation"""
self.scenario = {}
if scenario == "massless":
self.scenario.update({"N_eff": 3.046, "N_ncdm": 0})
elif scenario == "massiv":
self.scenario.update({"N_eff": 0, "N_ncdm": 2, "m_ncdm": "0.03, 0.04", "deg_ncdm": "2, 1"})
elif scenario == "both":
self.scenario.update({"N_eff": 1.5, "N_ncdm": 2, "m_ncdm": "0.03, 0.04", "deg_ncdm": "1, 0.5"})
sys.stderr.write("\n\n---------------------------------\n")
sys.stderr.write("| Test case: %s %s %s |\n" % (scenario, method, modes))
sys.stderr.write("---------------------------------\n")
self.scenario.update({"tensor method": method, "modes": modes, "output": "tCl, pCl"})
for key, value in self.scenario.iteritems():
sys.stderr.write("%s = %s\n" % (key, value))
sys.stderr.write("\n")
self.cosmo.set(dict(self.verbose.items() + self.scenario.items()))
self.cosmo.compute()
@parameterized.expand(itertools.izip(powerset(["100*theta_s", "Omega_dcdmdr"]), powerset([1.04, 0.20])))
def test_shooting_method(self, variables, values):
Omega_cdm = 0.25
scenario = {"Omega_b": 0.05}
for variable, value in zip(variables, values):
scenario.update({variable: value})
if "Omega_dcdmdr" in variables:
scenario.update({"Gamma_dcdm": 100, "Omega_cdm": Omega_cdm - scenario["Omega_dcdmdr"]})
else:
scenario.update({"Omega_cdm": Omega_cdm})
sys.stderr.write("\n\n---------------------------------\n")
sys.stderr.write("| Test shooting: %s |\n" % (", ".join(variables)))
sys.stderr.write("---------------------------------\n")
for key, value in scenario.iteritems():
sys.stderr.write("%s = %s\n" % (key, value))
sys.stderr.write("\n")
scenario.update(self.verbose)
self.assertTrue(self.cosmo.set(scenario), "Class failed to initialise with this input")
self.assertRaises
self.cosmo.compute()
# Now, check that the values are properly extracted
for variable, value in zip(variables, values):
if variable == "100*theta_s":
computed_value = self.cosmo.get_current_derived_parameters([variable])[variable]
self.assertAlmostEqual(value, computed_value, places=5)示例6: Class
# 需要导入模块: from classy import Class [as 别名]
# 或者: from classy.Class import get_current_derived_parameters [as 别名]
'P_k_max_1/Mpc':P_k_max_inv_Mpc,
'compute damping scale':'yes', # needed to output and plot Silk damping scale
'gauge':'newtonian'}
###############
#
# call CLASS
#
###############
M = Class()
M.set(common_settings)
M.compute()
#
# define conformal time sampling array
#
times = M.get_current_derived_parameters(['tau_rec','conformal_age'])
tau_rec=times['tau_rec']
tau_0 = times['conformal_age']
tau1 = np.logspace(math.log10(tau_ini),math.log10(tau_rec),tau_num_early)
tau2 = np.logspace(math.log10(tau_rec),math.log10(tau_0),tau_num_late)[1:]
tau2[-1] *= 0.999 # this tiny shift avoids interpolation errors
tau = np.concatenate((tau1,tau2))
tau_num = len(tau)
#
# use table of background and thermodynamics quantitites to define some functions
# returning some characteristic scales
# (of Hubble crossing, sound horizon crossing, etc.) at different time
#
background = M.get_background() # load background table
#print background.viewkeys()
thermodynamics = M.get_thermodynamics() # load thermodynamics table示例7: Class
# 需要导入模块: from classy import Class [as 别名]
# 或者: from classy.Class import get_current_derived_parameters [as 别名]
#Lambda CDM
LCDM = Class()
LCDM.set({'Omega_cdm':0.25,'Omega_b':0.05})
LCDM.compute()
# In[ ]:
#Einstein-de Sitter
CDM = Class()
CDM.set({'Omega_cdm':0.95,'Omega_b':0.05})
CDM.compute()
# Just to cross-check that Omega_Lambda is negligible
# (but not exactly zero because we neglected radiation)
derived = CDM.get_current_derived_parameters(['Omega0_lambda'])
print derived
print "Omega_Lambda =",derived['Omega0_lambda']
# In[ ]:
#Get background quantities and recover their names:
baLCDM = LCDM.get_background()
baCDM = CDM.get_background()
baCDM.viewkeys()
# In[ ]:
#Get H_0 in order to plot the distances in this unit示例8: classy
# 需要导入模块: from classy import Class [as 别名]
# 或者: from classy.Class import get_current_derived_parameters [as 别名]
class classy(SlikPlugin):
"""
Plugin for CLASS.
Credit: Brent Follin, Teresa Hamill
"""
#{cosmoslik name : class name}
name_mapping = {'As':'A_s',
'ns':'n_s',
'r':'r',
'nt':'n_t',
'ombh2':'omega_b',
'omch2':'omega_cdm',
'omnuh2':'omega_ncdm',
'tau':'tau_reio',
'H0':'H0',
'massive_neutrinos':'N_ncdm',
'massless_neutrinos':'N_ur',
'Yp':'YHe',
'pivot_scalar':'k_pivot'}
def __init__(self):
super(classy,self).__init__()
try:
from classy import Class
except ImportError:
raise Exception("Failed to import CLASS python wrapper 'Classy'.")
self.model = Class()
def __call__(self,
ombh2,
omch2,
H0,
As,
ns,
tau,
omnuh2, #0.006
w=None,
r=None,
nrun=None,
omk=0,
Yp=None,
Tcmb=2.7255,
massive_neutrinos=1,
massless_neutrinos=2.046,
l_max_scalar=3000,
l_max_tensor=3000,
pivot_scalar=0.002,
outputs=[],
**kwargs):
self.model.set(output='tCl, lCl, pCl',
lensing='yes',
l_max_scalars=l_max_scalar,
**{self.name_mapping[k]:v for k,v in locals().items()
if k in self.name_mapping and v is not None})
self.model.compute()
ell = arange(l_max_scalar+1)
self.cmb_result = {'cl_%s'%x:(self.model.lensed_cl(l_max_scalar)[x.lower()])*Tcmb**2*1e12*ell*(ell+1)/2/pi
for x in ['TT','TE','EE','BB','PP','TP']}
self.model.struct_cleanup()
self.model.empty()
return self.cmb_result
def get_bao_observables(self, z):
return {'H':self.model.Hubble(z),
'D_A':self.model.angular_distance(z),
'c':1.0,
'r_d':(self.model.get_current_derived_parameters(['rs_rec']))['rs_rec']}示例9: classy
# 需要导入模块: from classy import Class [as 别名]
# 或者: from classy.Class import get_current_derived_parameters [as 别名]
class classy(SlikPlugin):
"""
Plugin for CLASS.
Credit: Brent Follin, Teresa Hamill, Andy Scacco
"""
#{cosmoslik name : class name} - This needs to be done even for variables with the same name (because of for loop in self.model.set)!
name_mapping = {'As':'A_s',
'ns':'n_s',
'r':'r',
'k_c':'k_c',
'alpha_exp':'alpha_exp',
'nt':'n_t',
'ombh2':'omega_b',
'omch2':'omega_cdm',
'omnuh2':'omega_ncdm',
'tau':'tau_reio',
'H0':'H0',
'massive_neutrinos':'N_ncdm',
'massless_neutrinos':'N_ur',
'Yp':'YHe',
'pivot_scalar':'k_pivot',
#'Tcmb':'T_cmb',
#'P_k_max_hinvMpc':'P_k_max_h/Mpc'
#'w':'w0_fld',
#'nrun':'alpha_s',
#'omk':'Omega_k',
#'l_max_scalar':'l_max_scalars',
#'l_max_tensor':'l_max_tensors'
}
def __init__(self):
super(classy,self).__init__()
try:
from classy import Class
except ImportError:
raise Exception("Failed to import CLASS python wrapper 'Classy'.")
self.model = Class()
def __call__(self,
ombh2,
omch2,
H0,
As,
ns,
k_c,
alpha_exp,
tau,
#omnuh2=0, #0.006 #None means that Class will take the default for this, maybe?
w=None,
r=None,
nrun=None,
omk=0,
Yp=None,
Tcmb=2.7255,
#massive_neutrinos=0,
massless_neutrinos=3.046,
l_max_scalar=3000,
l_max_tensor=3000,
pivot_scalar=0.05,
outputs=[],
**kwargs):
self.model.set(output='tCl, lCl, pCl',
lensing='yes',
l_max_scalars=l_max_scalar,
**{self.name_mapping[k]:v for k,v in locals().items()
if k in self.name_mapping and v is not None})
self.model.compute()
ell = arange(l_max_scalar+1)
self.cmb_result = {'cl_%s'%x:(self.model.lensed_cl(l_max_scalar)[x.lower()])*Tcmb**2*1e12*ell*(ell+1)/2/pi
for x in ['TT','TE','EE','BB','PP','TP']}
self.model.struct_cleanup()
self.model.empty()
return self.cmb_result
def get_bao_observables(self, z):
return {'H':self.model.Hubble(z),
'D_A':self.model.angular_distance(z),
'c':1.0,
'r_d':(self.model.get_current_derived_parameters(['rs_rec']))['rs_rec']}示例10: Model
# 需要导入模块: from classy import Class [as 别名]
# 或者: from classy.Class import get_current_derived_parameters [as 别名]
#.........这里部分代码省略.........
key = varied_name
if texname:
self.set_texnames({varied_name: texname})
elif key not in self.texnames: # texname will not be set at this stage. No check required
self.set_texnames({varied_name: varied_name})
if (not update) or (key not in self.computed.keys()):
self.computed[key] = od()
for val in values:
# key = "{}={}".format(varied_name, val)
params["parameters_smg"] = inip.vary_params(params["parameters_smg"], [[index_variable, val]])
# It might be after the try to not store empty dictionaries.
# Nevertheless, I find more useful having them to keep track of
# those failed and, perhaps, to implement a method to obtain them
# with Omega_smg_debug.
d = self.computed[key][val] = {}
self.cosmo.empty()
self.cosmo.set(params)
try:
self.cosmo.compute()
except Exception, e:
print "Error: skipping {}={}".format(key, val)
if cosmo_msg:
print e
continue
d['tunned'] = self.cosmo.get_current_derived_parameters(['tuning_parameter'])['tuning_parameter']
for lst in [[back, 'back', self.cosmo.get_background],
[thermo, 'thermo', self.cosmo.get_thermodynamics],
[prim, 'prim', self.cosmo.get_thermodynamics]]:
if lst[0]:
output = lst[2]()
if lst[0][0] == 'all':
d[lst[1]] = output
else:
d[lst[1]] = {}
for item in back:
if type(item) is list:
d[lst[1]].update({item[0]: output[item[0]][item[1]]})
else:
d[lst[1]].update({item: output[item]})
if pert:
# Perturbation is tricky because it can accept two optional
# argument for get_perturbations and this method returns a
# dictionary {'kind_of_pert': [{variable: list_values}]}, where
# each item in the list is for a k (chosen in params).
if type(pert[0]) is dict:
output = self.cosmo.get_perturbations(pert[0]['z'], pert[0]['output_format'])
if pert[1] == 'all':
d['pert'] = output
else:
output = self.cosmo.get_perturbations()
if pert[0] == 'all':
d['pert'] = output
if (type(pert[0]) is not dict) and (pert[0] != 'all'):
d['pert'] = {}示例11: amplitude
# 需要导入模块: from classy import Class [as 别名]
# 或者: from classy.Class import get_current_derived_parameters [as 别名]
Theta0 = 0.25*one_k['delta_g']
phi = one_k['phi']
psi = one_k['psi']
theta_b = one_k['theta_b']
a = one_k['a']
# compute related quantitites
R = 3./4.*M.Omega_b()/M.Omega_g()*a # R = 3/4 * (rho_b/rho_gamma)
zero_point = -(1.+R)*psi # zero point of oscillations: -(1.+R)*psi
#
# get Theta0 oscillation amplitude (for vertical scale of plot)
#
Theta0_amp = max(Theta0.max(),-Theta0.min())
#
# get the time of decoupling
#
quantities = M.get_current_derived_parameters(['tau_rec'])
# print times.viewkeys()
tau_rec = quantities['tau_rec']
#
# use table of background quantitites to find the time of
# Hubble crossing (k / (aH)= 2 pi), sound horizon crossing (k * rs = 2pi)
#
background = M.get_background() # load background table
#print background.viewkeys()
#
background_tau = background['conf. time [Mpc]'] # read confromal times in background table
background_z = background['z'] # read redshift
background_k_over_aH = k/background['H [1/Mpc]']*(1.+background['z']) # read k/aH = k(1+z)/H
background_k_rs = k * background['comov.snd.hrz.'] # read k * rs
background_rho_m_over_r = (background['(.)rho_b']+background['(.)rho_cdm']) /(background['(.)rho_g']+background['(.)rho_ur']) # read rho_r / rho_m (to find time of equality)
#