def get_label_cdsd_hitran(row, details):
label = "CO2[iso{iso}] [{branch}{jl:.0f}]({v1l:.0f}{v2l:.0f}`{l2l:.0f}`{v3l:.0f})->({v1u:.0f}{v2u:.0f}`{l2u:.0f}`{v3u:.0f})".format(
**dict(
[
(k, row[k])
for k in [
"v1u",
"v2u",
"l2u",
"v3u",
"v1l",
"v2l",
"l2l",
"v3l",
"jl",
"iso",
]
]
+ [("branch", _fix_branch_format[row["branch"]])]
)
)
for k in details:
name, _, unit = details[k]
if is_float(row[k]):
label += "<br>{0} {1}: {2:.3g} {3}".format(k, name, row[k], unit)
else:
label += "<br>{0} {1}: {2} {3}".format(name, k, row[k], unit)
return label
def get_label_cdsd(row, details):
label = "CO2[iso{iso}] [{branch}{jl:.0f}](p{polyl:.0f}c{wangl:.0f}n{rankl:.0f})->(p{polyu:.0f}c{wangu:.0f}n{ranku:.0f})".format(
**dict(
[
(k, row[k])
for k in [
"polyl",
"wangl",
"rankl",
"polyu",
"wangu",
"ranku",
"jl",
"iso",
]
]
+ [("branch", _fix_branch_format[row["branch"]])]
)
)
for k in details:
name, _, unit = details[k]
if is_float(row[k]):
label += "<br>{0} {1}: {2:.3g} {3}".format(k, name, row[k], unit)
else:
label += "<br>{0} {1}: {2} {3}".format(name, k, row[k], unit)
return label
def get_label_hitran_locglob(row, details):
'''
Todo
-------
replace with simple astype(str) statements and str operations
ex:
> '['+df[locl].astype(str)+']('+df[globl].astype(str)+'->'+
> df[globu].astype(str)'+)'
will be much faster!
'''
molecule = get_molecule(row.id)
label = ('{0}[iso{1}]'.format(molecule, row['iso']) +
'[{locl}]({globl})->({globu})'.format(
**dict([(k, row[k])
for k in ['locl', 'globl', 'globu']])))
for k in details:
name, _, unit = details[k]
if is_float(row[k]):
label += '\n{0} {1}: {2:.3g} {3}'.format(k, name, row[k], unit)
else:
label += '\n{0} {1}: {2} {3}'.format(k, name, row[k], unit)
return label
def _h5_compatible(a_dict):
""" Make dictionary ``a_dict`` h5 compatible """
out = {}
for k, v in a_dict.items():
if v is None:
continue # dont store None
elif is_float(v):
out[k] = v
else:
out[k] = str(v) # convert to str
return out
def get_label_hitran(row, details):
'''
Todo
-------
replace with simple astype(str) statements and str operations
ex:
> '['+df[locl].astype(str)+']('+df[globl].astype(str)+'->'+
> df[globu].astype(str)'+)'
will be much faster!
'''
molecule = get_molecule(row.id)
# Get global labels
if molecule in HITRAN_CLASS1:
label = (
'{molec}[iso{iso:.0f}] [{branch}{jl:.0f}]({vl:.0f})->({vu:.0f})'
.format(
**dict([(k, row[k]) for k in ['vu', 'vl', 'jl', 'iso']] +
[('molec', molecule),
('branch', _fix_branch_format[row['branch']])])))
elif molecule in HITRAN_CLASS4:
label = (
'{molec}[iso{iso:.0f}] [{branch}{jl:.0f}]({v1l:.0f}{v2l:.0f}`{l2l:.0f}`{v3l:.0f})->({v1u:.0f}{v2u:.0f}`{l2u:.0f}`{v3u:.0f})'
.format(**dict([(k, row[k]) for k in [
'v1u', 'v2u', 'l2u', 'v3u', 'v1l', 'v2l', 'l2l', 'v3l',
'jl', 'iso'
]] + [('molec', molecule),
('branch', _fix_branch_format[row['branch']])])))
elif molecule in HITRAN_CLASS5:
label = (
'{molec}[iso{iso:.0f}] [{branch}{jl:.0f}]({v1l:.0f}{v2l:.0f}`{l2l:.0f}`{v3l:.0f} {rl:.0f})->({v1u:.0f}{v2u:.0f}`{l2u:.0f}`{v3u:.0f} {ru:.0f})'
.format(**dict([(k, row[k]) for k in [
'v1u', 'v2u', 'l2u', 'v3u', 'v1l', 'v2l', 'l2l', 'v3l',
'rl', 'ru', 'jl', 'iso'
]] + [('molec', molecule),
('branch', _fix_branch_format[row['branch']])])))
else:
raise NotImplementedError(
'No label for {0}. Please add it!'.format(molecule))
# Add details about some line properties
for k in details:
name, _, unit = details[k]
if is_float(row[k]):
label += '\n{0} {1}: {2:.3g} {3}'.format(k, name, row[k], unit)
else:
label += '\n{0} {1}: {2} {3}'.format(k, name, row[k], unit)
return label
def get_label_cdsd(row, details):
label = ('CO2[iso{iso}] [{branch}{jl:.0f}]({v1l:.0f}{v2l:.0f}`{l2l:.0f}`{v3l:.0f})->({v1u:.0f}{v2u:.0f}`{l2u:.0f}`{v3u:.0f})'.format(
**dict([(k, row[k]) for k in ['v1u', 'v2u', 'l2u', 'v3u',
'v1l', 'v2l', 'l2l', 'v3l',
'jl', 'iso']]+
[('branch',_fix_branch_format[row['branch']])])))
for k in details:
name, _, unit = details[k]
if is_float(row[k]):
label += '\n{0} {1}: {2:.3g} {3}'.format(k, name, row[k], unit)
else:
label += '\n{0} {1}: {2} {3}'.format(name, k, row[k], unit)
return label
def get_label_hitran_branchjv(row, details):
molecule = get_molecule(row.id)
label = ('{0}[iso{1}]'.format(molecule, row['iso']) +
'[{branch}{jl}]({v1l})->({v1u})'.format(
**dict([(k, row[k])
for k in ['branch', 'jl', 'v1l', 'v1u']])))
for k in details:
name, _, unit = details[k]
if is_float(row[k]):
label += '\n{0} {1}: {2:.3g} {3}'.format(k, name, row[k], unit)
else:
label += '\n{0} {1}: {2} {3}'.format(k, name, row[k], unit)
return label
def _format_input(self, **kwargs):
""" Format the input of parallel calculation request. Returns lists of
same lengths that can be parsed with zip(). User input can be lists,
or floats instead of constant-values list """
N = None # list length if there are list involved
kwout = {}
for k, v in kwargs.items():
if is_list(v):
if N is None:
N = len(v)
else:
if len(v) != N:
raise ValueError(
"Invalid input for {0}: ".format(k)
+ "all list should have the same length"
"(you may use floats too)"
)
kwout[k] = v
# Now let's turn floats into list of length N
if N is None:
warn("Using ParallelFactory for single case")
N = 1
for k, v in kwargs.items():
if type(v) in [int, np.int64]:
v = float(v) # int is not serializable (for some reason)
if is_list(v):
continue # already done
elif is_float(v) or v is None:
kwout[k] = [v] * N
else:
raise ValueError(
"Invalid input for {0}: ".format(k)
+ "input should be list-like or float-like"
+ "({0} instead)".format(type(v))
)
# check output is correct:
for v in kwout.values():
assert len(v) == N
return kwout
def _calc_vib_populations(self,
Tvib,
vib_distribution="boltzmann",
overpopulation=None):
"""Calculate vibrational populations from Tref to new Tvib and store
results in vib_levels dataframe
This does not modify the spectra yet!
By constructions populations are calculated divided by the state degeneracy,
i.e, g = gv * (2J+1) * gi * gs
This means we should only use ratios for rescaling
The information on state degeneracy and isotopic abundance is already
included in the linestrength / emission integral, hence in the pre-calculated
emisscoeff / abscoeff
"""
vib_levels = self.vib_levels
if overpopulation is None:
overpopulation = {}
if is_float(Tvib):
# Get new population
E_vib = vib_levels["Evib"]
g = 1 # explicitely calculate populations divided by degeneracy
# this means we should only use ratios for rescaling
if vib_distribution == "boltzmann":
nvibQvib = g * exp(-hc_k * E_vib / Tvib)
else:
raise NotImplementedError(
"vib_distribution: {0}".format(vib_distribution))
else:
Tvib1, Tvib2, Tvib3 = Tvib
# Get new population
E_vib1 = vib_levels["Evib1"]
E_vib2 = vib_levels["Evib2"]
E_vib3 = vib_levels["Evib3"]
g = 1 # explicitely calculate populations divided by degeneracy
# this means we should only use ratios for rescaling
if vib_distribution == "boltzmann":
nvibQvib = (g * exp(-hc_k * E_vib1 / Tvib1) *
exp(-hc_k * E_vib2 / Tvib2) *
exp(-hc_k * E_vib3 / Tvib3))
else:
raise NotImplementedError(
"vib_distribution: {0}".format(vib_distribution))
# Add overpopulation
if overpopulation != {}:
for k, ov in overpopulation.items():
nvibQvib.loc[k] *= ov
# TODO: test
warn(
"NotImplemented: partition function overpopulation correction not tested"
)
# Normalize with partition function
Qvib = nvibQvib.sum()
nvib = nvibQvib / Qvib
# update dataframe
vib_levels["nvib"] = nvib
vib_levels["Qvib"] = Qvib
return Qvib
def _get_fout_name(path, if_exists_then, add_date, add_info, sjson, verbose):
''' Get final output name (add info, extension, increment number if needed) '''
conditions = sjson['conditions']
if isdir(path):
fold, name = path, ''
else:
fold, name = split(path)
# ... add date info
if add_date not in ['', None, False]:
date = strftime(add_date)
else:
date = ''
# ... add conditions info
if add_info not in [[], {}, None, False]:
# complete name with info about calculation conditions
info = []
for k in add_info:
if k in conditions:
v = conditions[k]
# Format info
# ... special cases
if k in ['Tvib', 'Tgas', 'Trot']:
vs = "{0:.0f}".format(v)
# ... general case
elif is_float(v):
vs = "{0:.3g}".format(v)
else:
vs = "{0}".format(v)
try:
un = sjson['cond_units'][k]
except KeyError: # units not defined, or no units for this condition
un = ''
info.append("{0}{1}{2}".format(k, vs, un))
# Note: should test for filename validity here.
# See https://stackoverflow.com/questions/9532499/check-whether-a-path-is-valid-in-python-without-creating-a-file-at-the-paths-ta
# but it looks long. Best is probably to just test write a file
else:
if verbose:
print(('Warning. {0} not a valid condition'.format(k)))
info = '_'.join([_f for _f in info if _f])
else:
info = ''
# ... clean from forbidden characters
for c in [r'/']:
info = info.replace(c, '')
# ... get extension
rad, ext = splitext(name)
if ext == '':
ext = '.spec' # default extension
# ... Write full name
name = '_'.join([_f for _f in [date, rad, info] if _f]) + ext
fout = join(fold, name)
# ... Test for existence, replace if needed
if exists(fout):
if if_exists_then == 'increment':
if verbose:
print('Warning. File already exists. Filename is incremented')
i = 0
while exists(fout):
i += 1
name = '_'.join(
[_f for _f in [date, rad, info, str(i)] if _f]) + ext
fout = join(fold, name)
elif if_exists_then == 'replace':
if verbose:
print(('File exists and will be replaced: {0}'.format(name)))
else:
raise ValueError('File already exists {0}. Choose another filename'.format(fout)+\
', or set the `if_exists_then` option to `replace` or ìncrement`')
return fout
def eq_bands(self,
Tgas,
mole_fraction=None,
path_length=None,
pressure=None,
levels='all',
drop_lines=True):
''' Return all vibrational bands as a list of spectra for a spectrum
calculated under equilibrium.
By default, drop_lines is set to True so line_survey cannot be done on
spectra. See drop_lines for more information
Parameters
----------
Tgas: float
Gas temperature (K)
mole_fraction: float
database species mole fraction. If None, Factory mole fraction is used.
path_length: float
slab size (cm). If None, Factory mole fraction is used.
pressure: float
pressure (bar). If None, the default Factory pressure is used.
Other Parameters
----------------
levels: ``'all'``, int, list of str
calculate only bands that feature certain levels. If ``'all'``, all
bands are returned. If N (int), return bands for the first N levels
(sorted by energy). If list of str, return for all levels in the list.
The remaining levels are also calculated and returned merged together
in the ``'others'`` key. Default ``'all'``
drop_lines: boolean
if False remove the line database from each bands. Helps save a lot
of space, but line survey cannot be performed anymore. Default ``True``.
Returns
-------
bands: list of :class:`~radis.spectrum.spectrum.Spectrum` objects
Use .get(something) to get something among ['radiance', 'radiance_noslit',
'absorbance', etc...]
Or directly .plot(something) to plot it
Notes
-----
Process:
- Calculate line strenghts correcting the CDSD reference one.
- Then call the main routine that sums over all lines
'''
try:
# update defaults
if path_length is not None:
self.input.path_length = path_length
if mole_fraction is not None:
self.input.mole_fraction = mole_fraction
if pressure is not None:
self.input.pressure_mbar = pressure * 1e3
if not is_float(Tgas):
raise ValueError(
'Tgas should be float. Use ParallelFactory for multiple cases'
)
assert type(levels) in [str, list, int]
if type(levels) == str:
assert levels == 'all'
# Temporary:
if type(levels) == int:
raise NotImplementedError
# Get temperatures
self.input.Tgas = Tgas
self.input.Tvib = Tgas # just for info
self.input.Trot = Tgas # just for info
# Init variables
pressure_mbar = self.input.pressure_mbar
mole_fraction = self.input.mole_fraction
path_length = self.input.path_length
verbose = self.verbose
# %% Retrieve from database if exists
if self.autoretrievedatabase:
s = self._retrieve_bands_from_database()
if s is not None:
return s
# Print conditions
if verbose:
print('Calculating Equilibrium bands')
self.print_conditions()
# Start
t0 = time()
# %% Make sure database is loaded
if self.df0 is None:
raise AttributeError('Load databank first (.load_databank())')
if not 'band' in self.df0:
self._add_bands()
# %% Calculate the spectrum
# ---------------------------------------------------
t0 = time()
self._reinitialize()
# --------------------------------------------------------------------
# First calculate the linestrength at given temperature
self._calc_linestrength_eq(Tgas)
self._cutoff_linestrength()
# ----------------------------------------------------------------------
# Calculate line shift
self._calc_lineshift()
# ----------------------------------------------------------------------
# Line broadening
# ... calculate broadening FWHM
self._calc_broadening_FWHM()
# ... find weak lines and calculate semi-continuum (optional)
I_continuum = self._calculate_pseudo_continuum()
if I_continuum:
raise NotImplementedError(
'pseudo continuum not implemented for bands')
# ... apply lineshape and get absorption coefficient
# ... (this is the performance bottleneck)
wavenumber, abscoeff_v_bands = self._calc_broadening_bands()
# : :
# cm-1 1/(#.cm-2)
# # ... add semi-continuum (optional)
# abscoeff_v_bands = self._add_pseudo_continuum(abscoeff_v_bands, I_continuum)
# ----------------------------------------------------------------------
# Remove certain bands
if levels != 'all':
# Filter levels that feature the given energy levels. The rest
# is stored in 'others'
lines = self.df1
# We need levels to be explicitely stated for given molecule
assert hasattr(lines, 'viblvl_u')
assert hasattr(lines, 'viblvl_l')
# Get bands to remove
merge_bands = []
for band in abscoeff_v_bands: # note: could be vectorized with pandas str split. # TODO
viblvl_l, viblvl_u = band.split('->')
if not viblvl_l in levels and not viblvl_u in levels:
merge_bands.append(band)
# Remove bands from bandlist and add them to `others`
abscoeff_others = np.zeros_like(wavenumber)
for band in merge_bands:
abscoeff = abscoeff_v_bands.pop(band)
abscoeff_others += abscoeff
abscoeff_v_bands['others'] = abscoeff_others
if verbose:
print('{0} bands grouped under `others`'.format(
len(merge_bands)))
# ----------------------------------------------------------------------
# Generate spectra
# Progress bar for spectra generation
Nbands = len(abscoeff_v_bands)
if self.verbose:
print('Generating bands ({0})'.format(Nbands))
pb = ProgressBar(Nbands, active=self.verbose)
if Nbands < 100:
pb.set_active(False) # hide for low line number
# Generate spectra
s_bands = {}
for i, (band, abscoeff_v) in enumerate(abscoeff_v_bands.items()):
# incorporate density of molecules (see equation (A.16) )
density = mole_fraction * ((pressure_mbar * 100) /
(k_b * Tgas)) * 1e-6
# :
# (#/cm3)
abscoeff = abscoeff_v * density # cm-1
# ==============================================================================
# Warning
# ---------
# if the code is extended to multi-species, then density has to be added
# before lineshape broadening (as it would not be constant for all species)
# ==============================================================================
# get absorbance (technically it's the optical depth `tau`,
# absorbance `A` being `A = tau/ln(10)` )
absorbance = abscoeff * path_length
# Generate output quantities
transmittance_noslit = exp(-absorbance)
emissivity_noslit = 1 - transmittance_noslit
radiance_noslit = calc_radiance(
wavenumber,
emissivity_noslit,
Tgas,
unit=self.units['radiance_noslit'])
# ----------------------------- Export:
lines = self.df1[self.df1.band == band]
# if band == 'others': all lines will be None. # TODO
populations = None # self._get_vib_populations(lines)
# Store results in Spectrum class
if drop_lines:
lines = None
if self.save_memory:
try:
del self.df1 # saves some memory
except AttributeError: # already deleted
pass
conditions = self.get_conditions()
# Add band name and hitran band name in conditions
conditions.update({'band': band})
if lines:
def add_attr(attr):
if attr in lines:
if band == 'others':
val = 'N/A'
else:
# all have to be the same
val = lines[attr].iloc[0]
conditions.update({attr: val})
add_attr('band_htrn')
add_attr('viblvl_l')
add_attr('viblvl_u')
s = Spectrum(
quantities={
'abscoeff': (wavenumber, abscoeff),
'absorbance': (wavenumber, absorbance),
'emissivity_noslit': (wavenumber, emissivity_noslit),
'transmittance_noslit':
(wavenumber, transmittance_noslit),
# (mW/cm2/sr/nm)
'radiance_noslit': (wavenumber, radiance_noslit),
},
conditions=conditions,
populations=populations,
lines=lines,
units=self.units,
cond_units=self.cond_units,
waveunit=self.params.waveunit, # cm-1
name=band,
# dont check input (much faster, and Spectrum
warnings=False,
# is freshly baken so probably in a good format
)
# # update database if asked so
# if self.autoupdatedatabase:
# self.SpecDatabase.add(s)
# # Tvib=Trot=Tgas... but this way names in a database
# # generated with eq_spectrum are consistent with names
# # in one generated with non_eq_spectrum
s_bands[band] = s
pb.update(i) # progress bar
pb.done()
if verbose:
print(('... process done in {0:.1f}s'.format(time() - t0)))
return s_bands
except:
# An error occured: clean before crashing
self._clean_temp_file()
raise
def non_eq_bands(self,
Tvib,
Trot,
Ttrans=None,
mole_fraction=None,
path_length=None,
pressure=None,
vib_distribution='boltzmann',
rot_distribution='boltzmann',
levels='all',
return_lines=None):
''' Calculate vibrational bands in non-equilibrium case. Calculates
absorption with broadened linestrength and emission with broadened
Einstein coefficient.
Parameters
----------
Tvib: float
vibrational temperature [K]
can be a tuple of float for the special case of more-than-diatomic
molecules (e.g: CO2)
Trot: float
rotational temperature [K]
Ttrans: float
translational temperature [K]. If None, translational temperature is
taken as rotational temperature (valid at 1 atm for times above ~ 2ns
which is the RT characteristic time)
mole_fraction: float
database species mole fraction. If None, Factory mole fraction is used.
path_length: float
slab size (cm). If None, Factory mole fraction is used.
pressure: float
pressure (bar). If None, the default Factory pressure is used.
Other Parameters
----------------
levels: ``'all'``, int, list of str
calculate only bands that feature certain levels. If ``'all'``, all
bands are returned. If N (int), return bands for the first N levels
(sorted by energy). If list of str, return for all levels in the list.
The remaining levels are also calculated and returned merged together
in the ``'others'`` key. Default ``'all'``
return_lines: boolean
if ``True`` returns each band with its line database. Can produce big
spectra! Default ``True``
DEPRECATED. Now use export_lines attribute in Factory
Returns
-------
Returns :class:`~radis.spectrum.spectrum.Spectrum` object
Use .get(something) to get something among ['radiance', 'radiance_noslit',
'absorbance', etc...]
Or directly .plot(something) to plot it
'''
try:
# check inputs, update defaults
if path_length is not None:
self.input.path_length = path_length
if mole_fraction is not None:
self.input.mole_fraction = mole_fraction
if pressure is not None:
self.input.pressure_mbar = pressure * 1e3
if not (is_float(Tvib) or isinstance(Tvib, tuple)):
raise TypeError(
'Tvib should be float, or tuple (got {0})'.format(
type(Tvib)) +
'For parallel processing use ParallelFactory with a ' +
'list of float or a list of tuple')
singleTvibmode = is_float(Tvib)
if not is_float(Trot):
raise ValueError(
'Trot should be float. Use ParallelFactory for multiple cases'
)
assert type(levels) in [str, list, int]
if type(levels) == str:
assert levels == 'all'
else:
if len(levels) != len(set(levels)):
raise ValueError('levels list has duplicates')
if not vib_distribution in ['boltzmann']:
raise ValueError(
'calculate per band not meaningful if not Boltzmann')
# Temporary:
if type(levels) == int:
raise NotImplementedError
if return_lines is not None:
warn(
DeprecationWarning(
'return_lines replaced with export_lines attribute in Factory'
))
self.misc.export_lines = return_lines
# Get translational temperature
Tgas = Ttrans
if Tgas is None:
Tgas = Trot # assuming Ttrans = Trot
self.input.Tgas = Tgas
self.input.Tvib = Tvib
self.input.Trot = Trot
# Init variables
path_length = self.input.path_length
mole_fraction = self.input.mole_fraction
pressure_mbar = self.input.pressure_mbar
verbose = self.verbose
# %% Retrieve from database if exists
if self.autoretrievedatabase:
s = self._retrieve_bands_from_database()
if s is not None:
return s
# Print conditions
if verbose:
print('Calculating Non-Equilibrium bands')
self.print_conditions()
# %% Make sure database is loaded
self._check_line_databank()
self._check_noneq_parameters(vib_distribution, singleTvibmode)
if self.df0 is None:
raise AttributeError('Load databank first (.load_databank())')
# Make sure database has pre-computed non equilibrium quantities
# (Evib, Erot, etc.)
if not 'Evib' in self.df0:
self._calc_noneq_parameters()
if not 'Aul' in self.df0:
self._calc_weighted_trans_moment()
self._calc_einstein_coefficients()
if not 'band' in self.df0:
self._add_bands()
# %% Calculate the spectrum
# ---------------------------------------------------
t0 = time()
self._reinitialize()
# ----------------------------------------------------------------------
# Calculate Populations, Linestrength and Emission Integral
# (Note: Emission Integral is non canonical quantity, equivalent to
# Linestrength for absorption)
self._calc_populations_noneq(Tvib, Trot)
self._calc_linestrength_noneq()
self._calc_emission_integral()
# ----------------------------------------------------------------------
# Cutoff linestrength
self._cutoff_linestrength()
# ----------------------------------------------------------------------
# Calculate lineshift
self._calc_lineshift()
# ----------------------------------------------------------------------
# Line broadening
# ... calculate broadening FWHM
self._calc_broadening_FWHM()
# ... find weak lines and calculate semi-continuum (optional)
I_continuum = self._calculate_pseudo_continuum()
if I_continuum:
raise NotImplementedError(
'pseudo continuum not implemented for bands')
# ... apply lineshape and get absorption coefficient
# ... (this is the performance bottleneck)
wavenumber, abscoeff_v_bands, emisscoeff_v_bands = self._calc_broadening_noneq_bands(
)
# : : :
# cm-1 1/(#.cm-2) mW/sr/cm_1
# # ... add semi-continuum (optional)
# abscoeff_v_bands = self._add_pseudo_continuum(abscoeff_v_bands, I_continuum)
# ----------------------------------------------------------------------
# Remove bands
if levels != 'all':
# Filter levels that feature the given energy levels. The rest
# is stored in 'others'
lines = self.df1
# We need levels to be explicitely stated for given molecule
assert hasattr(lines, 'viblvl_u')
assert hasattr(lines, 'viblvl_l')
# Get bands to remove
merge_bands = []
for band in abscoeff_v_bands: # note: could be vectorized with pandas str split. # TODO
viblvl_l, viblvl_u = band.split('->')
if not viblvl_l in levels and not viblvl_u in levels:
merge_bands.append(band)
# Remove bands from bandlist and add them to `others`
abscoeff_others = np.zeros_like(wavenumber)
emisscoeff_others = np.zeros_like(wavenumber)
for band in merge_bands:
abscoeff = abscoeff_v_bands.pop(band)
emisscoeff = emisscoeff_v_bands.pop(band)
abscoeff_others += abscoeff
emisscoeff_others += emisscoeff
abscoeff_v_bands['others'] = abscoeff_others
emisscoeff_v_bands['others'] = emisscoeff_others
if verbose:
print('{0} bands grouped under `others`'.format(
len(merge_bands)))
# ----------------------------------------------------------------------
# Generate spectra
# Progress bar for spectra generation
Nbands = len(abscoeff_v_bands)
if self.verbose:
print('Generating bands ({0})'.format(Nbands))
pb = ProgressBar(Nbands, active=self.verbose)
if Nbands < 100:
pb.set_active(False) # hide for low line number
# Create spectra
s_bands = {}
for i, band in enumerate(abscoeff_v_bands):
abscoeff_v = abscoeff_v_bands[band]
emisscoeff_v = emisscoeff_v_bands[band]
# incorporate density of molecules (see equation (A.16) )
density = mole_fraction * ((pressure_mbar * 100) /
(k_b * Tgas)) * 1e-6
# :
# (#/cm3)
abscoeff = abscoeff_v * density # cm-1
emisscoeff = emisscoeff_v * density # m/sr/cm3/cm_1
# ==============================================================================
# Warning
# ---------
# if the code is extended to multi-species, then density has to be added
# before lineshape broadening (as it would not be constant for all species)
# ==============================================================================
# get absorbance (technically it's the optical depth `tau`,
# absorbance `A` being `A = tau/ln(10)` )
# Generate output quantities
absorbance = abscoeff * path_length # (adim)
transmittance_noslit = exp(-absorbance)
if self.input.self_absorption:
# Analytical output of computing RTE over a single slab of constant
# emissivity and absorption coefficient
b = abscoeff == 0 # optically thin mask
radiance_noslit = np.zeros_like(emisscoeff)
radiance_noslit[~b] = emisscoeff[~b] / \
abscoeff[~b]*(1-transmittance_noslit[~b])
radiance_noslit[b] = emisscoeff[b] * path_length
else:
# Note that for k -> 0,
radiance_noslit = emisscoeff * \
path_length # (mW/sr/cm2/cm_1)
# Convert `radiance_noslit` from (mW/sr/cm2/cm_1) to (mW/sr/cm2/nm)
radiance_noslit = convert_rad2nm(radiance_noslit, wavenumber,
'mW/sr/cm2/cm_1',
'mW/sr/cm2/nm')
# Convert 'emisscoeff' from (mW/sr/cm3/cm_1) to (mW/sr/cm3/nm)
emisscoeff = convert_emi2nm(emisscoeff, wavenumber,
'mW/sr/cm3/cm_1', 'mW/sr/cm3/nm')
# Note: emissivity not defined under non equilibrium
# ----------------------------- Export:
lines = self.df1[self.df1.band == band]
# Note: if band == 'others': # for others: all will be None. # TODO. FIXME
populations = self.get_populations(
self.misc.export_populations)
if not self.misc.export_lines:
lines = None
# Store results in Spectrum class
if self.save_memory:
try:
# saves some memory (note: only once 'lines' is discarded)
del self.df1
except AttributeError: # already deleted
pass
conditions = self.get_conditions()
conditions.update({'thermal_equilibrium': False})
# Add band name and hitran band name in conditions
def add_attr(attr):
''' # TODO: implement properly'''
if attr in lines:
if band == 'others':
val = 'N/A'
else:
# all have to be the same
val = lines[attr].iloc[0]
conditions.update({attr: val})
add_attr('band_htrn')
add_attr('viblvl_l')
add_attr('viblvl_u')
s = Spectrum(
quantities={
'abscoeff': (wavenumber, abscoeff),
'absorbance': (wavenumber, absorbance),
# (mW/cm3/sr/nm)
'emisscoeff': (wavenumber, emisscoeff),
'transmittance_noslit':
(wavenumber, transmittance_noslit),
# (mW/cm2/sr/nm)
'radiance_noslit': (wavenumber, radiance_noslit),
},
conditions=conditions,
populations=populations,
lines=lines,
units=self.units,
cond_units=self.cond_units,
waveunit=self.params.waveunit, # cm-1
name=band,
# dont check input (much faster, and Spectrum
warnings=False,
# is freshly baken so probably in a good format
)
# # update database if asked so
# if self.autoupdatedatabase:
# self.SpecDatabase.add(s, add_info=['Tvib', 'Trot'], add_date='%Y%m%d')
s_bands[band] = s
pb.update(i) # progress bar
pb.done()
if verbose:
print(('... process done in {0:.1f}s'.format(time() - t0)))
return s_bands
except:
# An error occured: clean before crashing
self._clean_temp_file()
raise
def get_label_hitran(row, details):
"""
Todo
-------
replace with simple astype(str) statements and str operations
ex:
> '['+df[locl].astype(str)+']('+df[globl].astype(str)+'->'+
> df[globu].astype(str)'+)'
will be much faster!
"""
molecule = get_molecule(row.id)
# Get global labels
if molecule in HITRAN_CLASS1:
label = (
"{molec}[iso{iso:.0f}] [{branch}{jl:.0f}]({vl:.0f})->({vu:.0f})"
.format(
**dict([(k, row[k]) for k in ["vu", "vl", "jl", "iso"]] + [
("molec", molecule),
("branch", _fix_branch_format[row["branch"]]),
])))
elif molecule in HITRAN_CLASS4:
label = "{molec}[iso{iso:.0f}] [{branch}{jl:.0f}]({v1l:.0f}{v2l:.0f}`{l2l:.0f}`{v3l:.0f})->({v1u:.0f}{v2u:.0f}`{l2u:.0f}`{v3u:.0f})".format(
**dict([(k, row[k]) for k in [
"v1u",
"v2u",
"l2u",
"v3u",
"v1l",
"v2l",
"l2l",
"v3l",
"jl",
"iso",
]] + [
("molec", molecule),
("branch", _fix_branch_format[row["branch"]]),
]))
elif molecule in HITRAN_CLASS5:
label = "{molec}[iso{iso:.0f}] [{branch}{jl:.0f}]({v1l:.0f}{v2l:.0f}`{l2l:.0f}`{v3l:.0f} {rl:.0f})->({v1u:.0f}{v2u:.0f}`{l2u:.0f}`{v3u:.0f} {ru:.0f})".format(
**dict([(k, row[k]) for k in [
"v1u",
"v2u",
"l2u",
"v3u",
"v1l",
"v2l",
"l2l",
"v3l",
"rl",
"ru",
"jl",
"iso",
]] + [
("molec", molecule),
("branch", _fix_branch_format[row["branch"]]),
]))
else:
raise NotImplementedError(
"No label for {0}. Please add it!".format(molecule))
# Add details about some line properties
for k in details:
name, _, unit = details[k]
if is_float(row[k]):
label += "<br>{0} {1}: {2:.3g} {3}".format(
k, name, row[k], unit)
else:
label += "<br>{0} {1}: {2} {3}".format(k, name, row[k], unit)
return label
def get_slit_function(slit_function,
unit='nm',
norm_by='area',
shape='triangular',
center_wavespace=None,
return_unit='same',
wstep=None,
plot=False,
resfactor=2,
*args,
**kwargs):
''' Import or generate slit function in correct wavespace
Give a file path to import, or a float / tuple to generate arbitrary shapes
Warning with units: read about unit and return_unit parameters.
See :meth:`~radis.spectrum.spectrum.Spectrum.apply_slit` and
:func:`~radis.tools.slit.convolve_with_slit` for more info
Parameters
----------
slit_function: tuple, or str
If float:
generate slit function with FWHM of `slit_function` (in `unit`)
If .txt file:
import experimental slit function (in `unit`): format must be 2-columns
with wavelengths and intensity (doesn't have to be normalized)
unit: 'nm' or 'cm-1'
unit of slit_function FWHM, or unit of imported file
norm_by: 'area', 'max', or None
how to normalize. `area` conserves energy. With `max` the slit is normalized
so that its maximum is one (that is what is done in Specair: it changes
the outptut spectrum unit, e.g. from 'mW/cm2/sr/µm' to 'mW/cm2/sr')
None doesnt normalize. Default 'area'
shape: 'triangular', 'trapezoidal', 'gaussian'
which shape to use when generating a slit. Default 'triangular'
center_wavespace: float, or None
center of slit when generated (in unit). Not used if slit is imported.
return_unit: 'nm', 'cm-1', or 'same'
if not 'same', slit is converted to the given wavespace.
wstep: float
which discretization step to use (in return_unit) when generating a slit
function. Not used if importing
Other Parameters
----------------
resfactor: int
resolution increase when resampling from nm to cm-1, or the other way
round. Default 2.
energy_threshold: float
tolerance fraction. Only used when importing experimental slit as the
theoretical slit functions are directly generated in spectrum wavespace
Default 1e-3 (0.1%)
Returns
-------
wslit, Islit: array
wslit is in `return_unit` . Islit is normalized according to `norm_by`
Examples
--------
>>> wslit, Islit = get_slit_function(1, 'nm', shape='triangular',
center_wavespace=600, wstep=0.01)
Returns a triangular slit function of FWHM = 1 nm, centered on 600 nm, with
a step of 0.01 nm
>>> wslit, Islit = get_slit_function(1, 'nm', shape='triangular',
center_wavespace=600, return_unit='cm-1', wstep=0.01)
Returns a triangular slit function expressed in cm-1, with a FWHM = 1 nm
(converted in equivalent width in cm-1 at 600 nm), centered on 600 nm, with
a step of 0.01 cm-1 (!)
Notes
-----
In norm_by 'max' mode, slit is normalized by slit max. In RADIS, this is done
in the spectrum wavespace (to avoid errors that would be caused by interpolating
the spectrum).
A problem arise if the spectrum wavespace is different from the slit wavespace:
typically, slit is in 'nm' but a spectrum calculated by RADIS is stored in
'cm-1': in that case, the convoluted spectrum is multiplied by /int(Islit*dν)
instead of /int(Islit*dλ). The output unit is then [radiance]*[spec_unit]
instead of [radiance]*[slit_unit], i.e, typically, [mW/cm2/sr/nm]*[cm-1]
instead of [mW/cm2/sr/nm]*[nm]=[mW/cm2/sr]
While this remains true if the units are taken into account, this is not the
expected behaviour. For instance, Specair users are used to having a FWHM(nm)
factor between spectra convolved with slit normalized by max and slit normalized
by area.
The norm_by='max' behaviour adds a correction factor
`/int(Islit*dλ)/int(Islit*dν)` to maintain an output spectrum in [radiance]*[slit_unit]
See Also
--------
:meth:`~radis.spectrum.spectrum.Spectrum.apply_slit`,
:func:`~radis.tools.slit.convolve_with_slit`
'''
if 'waveunit' in kwargs:
assert return_unit == 'same' # default
return_unit = kwargs.pop('waveunit')
warn(DeprecationWarning('waveunit renamed return_unit'))
if 'slit_unit' in kwargs:
assert unit == 'nm' # default
unit = kwargs.pop('slit_unit')
warn(DeprecationWarning('slit_unit renamed unit'))
energy_threshold = kwargs.pop('energy_threshold', 1e-3) # type: float
# tolerance fraction
# when resampling (only used in experimental slit as the)
# theoretical slit functions are directly generated in
# spectrum wavespace
def check_input_gen():
if center_wavespace is None:
raise ValueError('center_wavespace has to be given when generating '+\
'slit function')
if wstep is None:
raise ValueError('wstep has to be given when generating '+\
'slit function')
# Cast units
if return_unit == 'same':
return_unit = unit
unit = cast_waveunit(unit)
return_unit = cast_waveunit(return_unit)
scale_slit = 1 # in norm_by=max mode, used to keep units in [Iunit]*return_unit in [Iunit]*unit
# not used in norm_by=area mode
# First get the slit in return_unit space
if is_float(slit_function
): # Generate slit function (directly in return_unit space)
check_input_gen()
# ... first get FWHM in return_unit (it is in `unit` right now)
FWHM = slit_function
if return_unit == 'cm-1' and unit == 'nm':
# center_wavespace ~ nm, FWHM ~ nm
FWHM = dnm2dcm(FWHM, center_wavespace) # wavelength > wavenumber
center_wavespace = nm2cm(center_wavespace)
if norm_by == 'max':
scale_slit = slit_function / FWHM # [unit/return_unit]
elif return_unit == 'nm' and unit == 'cm-1':
# center_wavespace ~ cm-1, FWHM ~ cm-1
FWHM = dcm2dnm(FWHM, center_wavespace) # wavenumber > wavelength
center_wavespace = cm2nm(center_wavespace)
if norm_by == 'max':
scale_slit = slit_function / FWHM # [unit/return_unit]
else:
pass # correct unit already
# Now FWHM is in 'return_unit'
# ... now, build it (in our wavespace)
if __debug__:
printdbg(
'get_slit_function: {0} FWHM {1:.2f}{2}, center {3:.2f}{2}, norm_by {4}'
.format(shape, FWHM, return_unit, center_wavespace, norm_by))
if shape == 'triangular':
wslit, Islit = triangular_slit(FWHM,
wstep,
center=center_wavespace,
bplot=plot,
norm_by=norm_by,
waveunit=return_unit,
scale=scale_slit,
*args,
**kwargs)
# Insert other slit shapes here
# ...
elif shape == 'gaussian':
wslit, Islit = gaussian_slit(FWHM,
wstep,
center=center_wavespace,
bplot=plot,
norm_by=norm_by,
waveunit=return_unit,
scale=scale_slit,
*args,
**kwargs)
elif shape == 'trapezoidal':
raise TypeError(
'A (top, base) tuple must be given with a trapezoidal slit')
else:
raise TypeError(
'Slit function ({0}) not in known slit shapes: {1}'.format(
shape, SLIT_SHAPES))
elif isinstance(slit_function, tuple):
check_input_gen()
try:
top, base = slit_function
except:
raise TypeError(
'Wrong format for slit function: {0}'.format(slit_function))
if shape == 'trapezoidal':
pass
elif shape == 'triangular': # it's the default
warn(
'Triangular slit given with a tuple: we used trapezoidal slit instead'
)
shape = 'trapezoidal'
else:
raise TypeError(
'A (top, base) tuple must be used with a trapezoidal slit')
# ... first get FWHM in our wavespace unit
if return_unit == 'cm-1' and unit == 'nm':
# center_wavespace ~ nm, FWHM ~ nm
top = dnm2dcm(top, center_wavespace) # wavelength > wavenumber
base = dnm2dcm(base, center_wavespace) # wavelength > wavenumber
center_wavespace = nm2cm(center_wavespace)
if norm_by == 'max':
scale_slit = sum(slit_function) / (top + base
) # [unit/return_unit]
elif return_unit == 'nm' and unit == 'cm-1':
# center_wavespace ~ cm-1, FWHM ~ cm-1
top = dcm2dnm(top, center_wavespace) # wavenumber > wavelength
base = dcm2dnm(base, center_wavespace) # wavenumber > wavelength
center_wavespace = cm2nm(center_wavespace)
if norm_by == 'max':
scale_slit = sum(slit_function) / (top + base
) # [unit/return_unit]
else:
pass # correct unit already
FWHM = (top + base) / 2
# ... now, build it (in our wavespace)
if __debug__:
printdbg(
'get_slit_function: {0}, FWHM {1:.2f}{2}, center {3:.2f}{2}, norm_by {4}'
.format(shape, FWHM, return_unit, center_wavespace, norm_by))
wslit, Islit = trapezoidal_slit(top,
base,
wstep,
center=center_wavespace,
bplot=plot,
norm_by=norm_by,
waveunit=return_unit,
scale=scale_slit,
*args,
**kwargs)
elif isinstance(slit_function, string_types): # import it
if __debug__:
printdbg(
'get_slit_function: {0} in {1}, norm_by {2}, return in {3}'.
format(slit_function, unit, norm_by, return_unit))
wslit, Islit = import_experimental_slit(
slit_function,
norm_by=norm_by, # norm is done later anyway
waveunit=unit,
bplot=False, # we will plot after resampling
*args,
**kwargs)
# ... get unit
# Normalize
if norm_by == 'area': # normalize by the area
# I_slit /= np.trapz(I_slit, x=w_slit)
Iunit = '1/{0}'.format(unit)
elif norm_by == 'max': # set maximum to 1
Iunit = '1'
elif norm_by is None:
Iunit = None
else:
raise ValueError(
'Unknown normalization type: `norm_by` = {0}'.format(norm_by))
# ... check it looks correct
unq, counts = np.unique(wslit, return_counts=True)
dup = counts > 1
if dup.sum() > 0:
raise ValueError(
'Not all wavespace points are unique: slit function ' +
'format may be wrong. Duplicates for w={0}'.format(unq[dup]))
# ... resample if needed
if return_unit == 'cm-1' and unit == 'nm': # wavelength > wavenumber
wold, Iold = wslit, Islit
wslit, Islit = resample_even(nm2cm(wslit),
Islit,
resfactor=resfactor,
energy_threshold=energy_threshold,
print_conservation=True)
scale_slit = trapz(Iold, wold) / trapz(Islit,
wslit) # [unit/return_unit]
renormalize = True
elif return_unit == 'nm' and unit == 'cm-1': # wavenumber > wavelength
wold, Iold = wslit, Islit
wslit, Islit = resample_even(cm2nm(wslit),
Islit,
resfactor=resfactor,
energy_threshold=energy_threshold,
print_conservation=True)
scale_slit = trapz(Iold, wold) / trapz(Islit,
wslit) # [unit/return_unit]
renormalize = True
else: # return_unit == unit
renormalize = False
# Note: if wstep dont match with quantity it's alright as it gets
# interpolated in the `convolve_with_slit` function
# re-Normalize if needed (after changing units)
if renormalize:
if __debug__: printdbg('get_slit_function: renormalize')
if norm_by == 'area': # normalize by the area
Islit /= abs(np.trapz(Islit, x=wslit))
Iunit = '1/{0}'.format(return_unit)
elif norm_by == 'max': # set maximum to 1
Islit /= abs(np.max(Islit))
Islit *= scale_slit
Iunit = '1'
if scale_slit != 1:
Iunit += 'x{0}'.format(scale_slit)
# elif norm_by == 'max2': # set maximum to 1 # removed this mode for simplification
# Islit /= abs(np.max(Islit))
elif norm_by is None:
Iunit = None
else:
raise ValueError(
'Unknown normalization type: `norm_by` = {0}'.format(
norm_by))
if plot: # (plot after resampling / renormalizing)
# Plot slit
plot_slit(wslit, Islit, waveunit=return_unit, Iunit=Iunit)
else:
raise TypeError('Unexpected type for slit function: {0}'.format(
type(slit_function)))
return wslit, Islit
