def get_phi_ss_at_quantile_ACME(phi_model, quantile):
"""
Returns the phi_ss values at the specified quantile as an instance of
`class`:: openquake.hazardlib.gsim.base.CoeffsTable - applies to the
magnitude-dependent cases
"""
# Setup SA coeffs - the backward compatible Python 2.7 way
coeffs = deepcopy(phi_model.sa_coeffs)
coeffs.update(phi_model.non_sa_coeffs)
for imt in coeffs:
if quantile is None:
coeffs[imt] = {
"a": phi_model[imt]["mean_a"],
"b": phi_model[imt]["mean_b"]
}
else:
coeffs[imt] = {
"a":
_at_percentile(phi_model[imt]["mean_a"],
phi_model[imt]["var_a"], quantile),
"b":
_at_percentile(phi_model[imt]["mean_b"],
phi_model[imt]["var_b"], quantile)
}
return CoeffsTable.fromdict(coeffs, logratio=False)
def _dict_to_coeffs_table(input_dict, name):
"""
Transform a dictionary of parameters organised by IMT into a
coefficient table
"""
coeff_dict = {}
for key in input_dict:
coeff_dict[from_string(key)] = {name: input_dict[key]}
return {name: CoeffsTable.fromdict(coeff_dict)}
def _get_sigma_at_quantile(self, sigma_quantile):
"""
Calculates the total standard deviation at the specified quantile
"""
# Mean mean is found in self.TAU. Get the variance in tau
tau_std = TAU_SETUP[self.tau_model]["STD"]
# Mean phiss is found in self.PHI_SS. Get the variance in phi
phi_std = deepcopy(self.PHI_SS.sa_coeffs)
phi_std.update(self.PHI_SS.non_sa_coeffs)
for key in phi_std:
phi_std[key] = {"a": PHI_SETUP[self.phi_model][key]["var_a"],
"b": PHI_SETUP[self.phi_model][key]["var_b"]}
if self.ergodic:
# IMT list should be taken from the PHI_S2SS_MODEL
imt_list = list(
PHI_S2SS_MODEL[self.phi_s2ss_model].non_sa_coeffs)
imt_list += list(PHI_S2SS_MODEL[self.phi_s2ss_model].sa_coeffs)
else:
imt_list = list(phi_std)
phi_std = CoeffsTable.fromdict(phi_std)
tau_bar, tau_std = _get_tau_vector(self, self.TAU, tau_std, imt_list)
phi_bar, phi_std = _get_phi_vector(self, self.PHI_SS, phi_std, imt_list)
sigma = {}
# Calculate the total standard deviation
for imt in imt_list:
sigma[imt] = {}
for i, key in enumerate(self.tau_keys):
# Calculates the expected standard deviation
sigma_bar = np.sqrt(tau_bar[imt][i] ** 2. +
phi_bar[imt][i] ** 2.)
# Calculated the variance in the standard deviation
sigma_std = np.sqrt(tau_std[imt][i] ** 2. +
phi_std[imt][i] ** 2.)
# The keys swap from tau to sigma
new_key = key.replace("tau", "sigma")
if sigma_quantile is not None:
sigma[imt][new_key] = _at_percentile(
sigma_bar, sigma_std, sigma_quantile)
else:
sigma[imt][new_key] = sigma_bar
self.tau_keys[i] = new_key
self.SIGMA = CoeffsTable.fromdict(sigma)
def get_phi_s2ss_at_quantile(phi_model, quantile):
"""
Returns the phi_s2ss value for all periods at the specific quantile as
an instance of `class`::openquake.hazardlib.gsim.base.CoeffsTable
"""
# Setup SA coeffs - the backward compatible Python 2.7 way
coeffs = deepcopy(phi_model.sa_coeffs)
coeffs.update(phi_model.non_sa_coeffs)
for imt in coeffs:
if quantile is None:
coeffs[imt] = {"phi_s2ss": phi_model[imt]["mean"]}
else:
coeffs[imt] = {"phi_s2ss": _at_percentile(phi_model[imt]["mean"],
phi_model[imt]["var"],
quantile)}
return CoeffsTable.fromdict(coeffs)
def __init__(self,
gmpe_name,
reference_velocity=760.,
region=None,
phi_0=None,
**kwargs):
super().__init__(**kwargs)
if isinstance(gmpe_name, str):
self.gmpe = registry[gmpe_name](**kwargs)
else:
# An instantiated class is passed as an argument
self.gmpe = copy.deepcopy(gmpe_name)
# Define the reference velocity - set to 760. by default
self.rock_vs30 = reference_velocity if reference_velocity else\
self.DEFINED_FOR_REFERENCE_VELOCITY
for name in uppernames:
setattr(self, name,
frozenset(getattr(self, name) | getattr(self.gmpe, name)))
stddev_check = (const.StdDev.INTER_EVENT in
self.DEFINED_FOR_STANDARD_DEVIATION_TYPES) and\
(const.StdDev.INTRA_EVENT in
self.DEFINED_FOR_STANDARD_DEVIATION_TYPES)
if not stddev_check:
raise ValueError("Input GMPE %s not defined for inter- and intra-"
"event standard deviation" % str(self.gmpe))
if isinstance(phi_0, dict):
# Input phi_0 model
iphi_0 = {from_string(key): {'value': phi_0[key]} for key in phi_0}
self.phi_0 = CoeffsTable.fromdict(iphi_0)
else:
# No input phi_0 model
self.phi_0 = None
# Regionalisation of the linear site term is possible
# check if region is in the set of supported terms and
# raise error otherwise
if region is not None:
if region in REGION_SET:
self.region = "ck{:s}".format(region)
else:
raise ValueError("Region must be one of: %s" %
" ".join(REGION_SET))
else:
self.region = region
def __init__(self,
gmpe_name,
branch="central",
sigma_mu_epsilon=0.0,
homoskedastic_sigma=False,
scaling_factor=None,
vskappa=None,
phi_ds2s=True,
**kwargs):
super().__init__(gmpe_name=gmpe_name,
branch=branch,
homoskedastic_sigma=homoskedastic_sigma,
scaling_factor=scaling_factor,
vskappa=vskappa,
phi_ds2s=phi_ds2s,
**kwargs)
self.gmpe = registry[gmpe_name]()
# Update the required_parameters
for name in uppernames:
setattr(self, name,
frozenset(getattr(self, name) | getattr(self.gmpe, name)))
# If the scaling factor take the natural log
if scaling_factor:
self.scaling_factor = np.log(scaling_factor)
else:
self.scaling_factor = None
# If vs-kappa is passed as a dictionary then transform to CoeffsTable
if isinstance(vskappa, dict):
in_vskappa = {}
for key in vskappa:
in_vskappa[from_string(key)] = {
"vskappa": np.log(vskappa[key])
}
self.vskappa = CoeffsTable.fromdict(in_vskappa)
else:
self.vskappa = None
self.branch = branch
self.sigma_mu_epsilon = sigma_mu_epsilon
self.homoskedastic_sigma = homoskedastic_sigma
self.phi_ds2s = phi_ds2s
