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cigale
cigale
Commit ef3cabd2 authored by Rodrigo González-Castillo's avatar Rodrigo González-Castillo
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Change parsers to their own modules. 

BEST_RESULTS and MOCK_RESULTS now are available in the command line options (optional)
parent eedcad3a
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pcigale_plots/__init__.py
View file @ ef3cabd2
......@@ -7,489 +7,22 @@
# Author: Yannick Roehlly, Médéric Boquien & Denis Burgarella
import argparse
import glob
from itertools import product, repeat
from collections import OrderedDict
import sys
from astropy.table import Table
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import multiprocessing as mp
import numpy as np
import os
import pkg_resources
from scipy.constants import c
from scipy import stats
from pcigale.data import Database
from pcigale.utils import read_table
from pcigale.session.configuration import Configuration
import matplotlib.gridspec as gridspec
from .parsers.chi2 import chi2 as chi2_action
from .parsers.pdf import pdf as pdf_action
from .parsers.sed import sed as sed_action
from .parsers.mock import mock as mock_action
__version__ = "0.1-alpha"
# Name of the file containing the best models information
BEST_RESULTS = "results.fits"
MOCK_RESULTS = "results_mock.fits"
# Wavelength limits (restframe) when plotting the best SED.
PLOT_L_MIN = 0.1
PLOT_L_MAX = 5e5
def _chi2_worker(obj_name, var_name):
"""Plot the reduced χ² associated with a given analysed variable
Parameters
----------
obj_name: string
Name of the object.
var_name: string
Name of the analysed variable..
"""
figure = plt.figure()
ax = figure.add_subplot(111)
var_name = var_name.replace('/', '_')
fnames = glob.glob("out/{}_{}_chi2-block-*.npy".format(obj_name, var_name))
for fname in fnames:
data = np.memmap(fname, dtype=np.float64)
data = np.memmap(fname, dtype=np.float64, shape=(2, data.size // 2))
ax.scatter(data[1, :], data[0, :], color='k', s=.1)
ax.set_xlabel(var_name)
ax.set_ylabel("Reduced $\chi^2$")
ax.set_ylim(0., )
ax.minorticks_on()
figure.suptitle("Reduced $\chi^2$ distribution of {} for {}."
.format(var_name, obj_name))
figure.savefig("out/{}_{}_chi2.pdf".format(obj_name, var_name))
plt.close(figure)
def _pdf_worker(obj_name, var_name):
"""Plot the PDF associated with a given analysed variable
Parameters
----------
obj_name: string
Name of the object.
var_name: string
Name of the analysed variable..
"""
var_name = var_name.replace('/', '_')
if var_name.endswith('_log'):
fnames = glob.glob("out/{}_{}_chi2-block-*.npy".format(obj_name,
var_name[:-4]))
log = True
else:
fnames = glob.glob("out/{}_{}_chi2-block-*.npy".format(obj_name,
var_name))
log = False
likelihood = []
model_variable = []
for fname in fnames:
data = np.memmap(fname, dtype=np.float64)
data = np.memmap(fname, dtype=np.float64, shape=(2, data.size // 2))
likelihood.append(np.exp(-data[0, :] / 2.))
model_variable.append(data[1, :])
likelihood = np.concatenate(likelihood)
model_variable = np.concatenate(model_variable)
if log is True:
model_variable = np.log10(model_variable)
w = np.where(np.isfinite(likelihood) & np.isfinite(model_variable))
likelihood = likelihood[w]
model_variable = model_variable[w]
Npdf = 100
min_hist = np.min(model_variable)
max_hist = np.max(model_variable)
Nhist = min(Npdf, len(np.unique(model_variable)))
if min_hist == max_hist:
pdf_grid = np.array([min_hist, max_hist])
pdf_prob = np.array([1., 1.])
else:
pdf_prob, pdf_grid = np.histogram(model_variable, Nhist,
(min_hist, max_hist),
weights=likelihood, density=True)
pdf_x = (pdf_grid[1:]+pdf_grid[:-1]) / 2.
pdf_grid = np.linspace(min_hist, max_hist, Npdf)
pdf_prob = np.interp(pdf_grid, pdf_x, pdf_prob)
figure = plt.figure()
ax = figure.add_subplot(111)
ax.plot(pdf_grid, pdf_prob, color='k')
ax.set_xlabel(var_name)
ax.set_ylabel("Probability density")
ax.minorticks_on()
figure.suptitle("Probability distribution function of {} for {}"
.format(var_name, obj_name))
figure.savefig("out/{}_{}_pdf.pdf".format(obj_name, var_name))
plt.close(figure)
def _sed_worker(obs, mod, filters, sed_type, nologo):
"""Plot the best SED with the associated fluxes in bands
Parameters
----------
obs: Table row
Data from the input file regarding one object.
mod: Table row
Data from the best model of one object.
filters: ordered dictionary of Filter objects
The observed fluxes in each filter.
sed_type: string
Type of SED to plot. It can either be "mJy" (flux in mJy and observed
frame) or "lum" (luminosity in W and rest frame)
nologo: boolean
Do not add the logo when set to true.
"""
if os.path.isfile("out/{}_best_model.fits".format(obs['id'])):
sed = Table.read("out/{}_best_model.fits".format(obs['id']))
filters_wl = np.array([filt.pivot_wavelength
for filt in filters.values()])
wavelength_spec = sed['wavelength']
obs_fluxes = np.array([obs[filt] for filt in filters.keys()])
obs_fluxes_err = np.array([obs[filt+'_err']
for filt in filters.keys()])
mod_fluxes = np.array([mod["best."+filt] for filt in filters.keys()])
if obs['redshift'] >= 0:
z = obs['redshift']
else: # Redshift mode
z = mod['best.universe.redshift']
DL = mod['best.universe.luminosity_distance']
if sed_type == 'lum':
xmin = PLOT_L_MIN
xmax = PLOT_L_MAX
k_corr_SED = 1e-29 * (4.*np.pi*DL*DL) * c / (filters_wl*1e-9)
obs_fluxes *= k_corr_SED
obs_fluxes_err *= k_corr_SED
mod_fluxes *= k_corr_SED
for cname in sed.colnames[1:]:
sed[cname] *= wavelength_spec
filters_wl /= 1. + z
wavelength_spec /= 1. + z
elif sed_type == 'mJy':
xmin = PLOT_L_MIN * (1. + z)
xmax = PLOT_L_MAX * (1. + z)
k_corr_SED = 1.
for cname in sed.colnames[1:]:
sed[cname] *= (wavelength_spec * 1e29 /
(c / (wavelength_spec * 1e-9)) /
(4. * np.pi * DL * DL))
else:
print("Unknown plot type")
filters_wl /= 1000.
wavelength_spec /= 1000.
wsed = np.where((wavelength_spec > xmin) & (wavelength_spec < xmax))
figure = plt.figure()
gs = gridspec.GridSpec(2, 1, height_ratios=[3, 1])
if (sed.columns[1][wsed] > 0.).any():
ax1 = plt.subplot(gs[0])
ax2 = plt.subplot(gs[1])
# Stellar emission
if 'nebular.absorption_young' in sed.columns:
ax1.loglog(wavelength_spec[wsed],
(sed['stellar.young'][wsed] +
sed['attenuation.stellar.young'][wsed] +
sed['nebular.absorption_young'][wsed] +
sed['stellar.old'][wsed] +
sed['attenuation.stellar.old'][wsed] +
sed['nebular.absorption_old'][wsed]),
label="Stellar attenuated ", color='orange',
marker=None, nonposy='clip', linestyle='-',
linewidth=0.5)
else:
ax1.loglog(wavelength_spec[wsed],
(sed['stellar.young'][wsed] +
sed['attenuation.stellar.young'][wsed] +
sed['stellar.old'][wsed] +
sed['attenuation.stellar.old'][wsed]),
label="Stellar attenuated ", color='orange',
marker=None, nonposy='clip', linestyle='-',
linewidth=0.5)
ax1.loglog(wavelength_spec[wsed],
(sed['stellar.old'][wsed] +
sed['stellar.young'][wsed]),
label="Stellar unattenuated", color='b', marker=None,
nonposy='clip', linestyle='--', linewidth=0.5)
# Nebular emission
if 'nebular.lines_young' in sed.columns:
ax1.loglog(wavelength_spec[wsed],
(sed['nebular.lines_young'][wsed] +
sed['nebular.lines_old'][wsed] +
sed['nebular.continuum_young'][wsed] +
sed['nebular.continuum_old'][wsed] +
sed['attenuation.nebular.lines_young'][wsed] +
sed['attenuation.nebular.lines_old'][wsed] +
sed['attenuation.nebular.continuum_young'][wsed] +
sed['attenuation.nebular.continuum_old'][wsed]),
label="Nebular emission", color='y', marker=None,
nonposy='clip', linewidth=.5)
# Dust emission Draine & Li
if 'dust.Umin_Umin' in sed.columns:
ax1.loglog(wavelength_spec[wsed],
(sed['dust.Umin_Umin'][wsed] +
sed['dust.Umin_Umax'][wsed]),
label="Dust emission", color='r', marker=None,
nonposy='clip', linestyle='-', linewidth=0.5)
# Dust emission Dale
if 'dust' in sed.columns:
ax1.loglog(wavelength_spec[wsed], sed['dust'][wsed],
label="Dust emission", color='r', marker=None,
nonposy='clip', linestyle='-', linewidth=0.5)
# AGN emission Fritz
if 'agn.fritz2006_therm' in sed.columns:
ax1.loglog(wavelength_spec[wsed],
(sed['agn.fritz2006_therm'][wsed] +
sed['agn.fritz2006_scatt'][wsed] +
sed['agn.fritz2006_agn'][wsed]),
label="AGN emission", color='g', marker=None,
nonposy='clip', linestyle='-', linewidth=0.5)
# Radio emission
if 'radio_nonthermal' in sed.columns:
ax1.loglog(wavelength_spec[wsed],
sed['radio_nonthermal'][wsed],
label="Radio nonthermal", color='brown',
marker=None, nonposy='clip', linestyle='-',
linewidth=0.5)
ax1.loglog(wavelength_spec[wsed], sed['L_lambda_total'][wsed],
label="Model spectrum", color='k', nonposy='clip',
linestyle='-', linewidth=1.5)
ax1.set_autoscale_on(False)
s = np.argsort(filters_wl)
filters_wl = filters_wl[s]
mod_fluxes = mod_fluxes[s]
obs_fluxes = obs_fluxes[s]
obs_fluxes_err = obs_fluxes_err[s]
ax1.scatter(filters_wl, mod_fluxes, marker='o', color='r', s=8,
zorder=3, label="Model fluxes")
mask_ok = np.logical_and(obs_fluxes > 0., obs_fluxes_err > 0.)
ax1.errorbar(filters_wl[mask_ok], obs_fluxes[mask_ok],
yerr=obs_fluxes_err[mask_ok]*3, ls='', marker='s',
label='Observed fluxes', markerfacecolor='None',
markersize=6, markeredgecolor='b', capsize=0.)
mask_uplim = np.logical_and(np.logical_and(obs_fluxes > 0.,
obs_fluxes_err < 0.),
obs_fluxes_err > -9990. * k_corr_SED)
if not mask_uplim.any() == False:
ax1.errorbar(filters_wl[mask_uplim], obs_fluxes[mask_uplim],
yerr=obs_fluxes_err[mask_uplim]*3, ls='',
marker='v', label='Observed upper limits',
markerfacecolor='None', markersize=6,
markeredgecolor='g', capsize=0.)
mask_noerr = np.logical_and(obs_fluxes > 0.,
obs_fluxes_err < -9990. * k_corr_SED)
if not mask_noerr.any() == False:
ax1.errorbar(filters_wl[mask_noerr], obs_fluxes[mask_noerr],
ls='', marker='s', markerfacecolor='None',
markersize=6, markeredgecolor='r',
label='Observed fluxes, no errors', capsize=0.)
mask = np.where(obs_fluxes > 0.)
ax2.errorbar(filters_wl[mask],
(obs_fluxes[mask]-mod_fluxes[mask])/obs_fluxes[mask],
yerr=obs_fluxes_err[mask]/obs_fluxes[mask]*3,
marker='_', label="(Obs-Mod)/Obs", color='k',
capsize=0.)
ax2.plot([xmin, xmax], [0., 0.], ls='--', color='k')
ax2.set_xscale('log')
ax2.minorticks_on()
figure.subplots_adjust(hspace=0., wspace=0.)
ax1.set_xlim(xmin, xmax)
ymin = min(np.min(obs_fluxes[mask_ok]),
np.min(mod_fluxes[mask_ok]))
if not mask_uplim.any() == False:
ymax = max(max(np.max(obs_fluxes[mask_ok]),
np.max(obs_fluxes[mask_uplim])),
max(np.max(mod_fluxes[mask_ok]),
np.max(mod_fluxes[mask_uplim])))
else:
ymax = max(np.max(obs_fluxes[mask_ok]),
np.max(mod_fluxes[mask_ok]))
ax1.set_ylim(1e-1*ymin, 1e1*ymax)
ax2.set_xlim(xmin, xmax)
ax2.set_ylim(-1.0, 1.0)
if sed_type == 'lum':
ax2.set_xlabel("Rest-frame wavelength [$\mu$m]")
ax1.set_ylabel("Luminosity [W]")
ax2.set_ylabel("Relative residual luminosity")
else:
ax2.set_xlabel("Observed wavelength [$\mu$m]")
ax1.set_ylabel("Flux [mJy]")
ax2.set_ylabel("Relative residual flux")
ax1.legend(fontsize=6, loc='best', fancybox=True, framealpha=0.5)
ax2.legend(fontsize=6, loc='best', fancybox=True, framealpha=0.5)
plt.setp(ax1.get_xticklabels(), visible=False)
plt.setp(ax1.get_yticklabels()[1], visible=False)
figure.suptitle("Best model for {} at z = {}. Reduced $\chi^2$={}".
format(obs['id'], np.round(z, decimals=3),
np.round(mod['best.reduced_chi_square'],
decimals=2)))
if nologo is False:
image = plt.imread(pkg_resources.resource_filename(__name__,
"data/CIGALE.png"))
figure.figimage(image, 75, 330, origin='upper', zorder=10,
alpha=1)
figure.savefig("out/{}_best_model.pdf".format(obs['id']))
plt.close(figure)
else:
print("No valid best SED found for {}. No plot created.".
format(obs['id']))
else:
print("No SED found for {}. No plot created.".format(obs['id']))
def _mock_worker(exact, estimated, param, nologo):
"""Plot the exact and estimated values of a parameter for the mock analysis
Parameters
----------
exact: Table column
Exact values of the parameter.
estimated: Table column
Estimated values of the parameter.
param: string
Name of the parameter
nologo: boolean
Do not add the logo when set to true.
"""
range_exact = np.linspace(np.min(exact), np.max(exact), 100)
# We compute the linear regression
if (np.min(exact) < np.max(exact)):
slope, intercept, r_value, p_value, std_err = stats.linregress(exact,
estimated)
else:
slope = 0.0
intercept = 1.0
r_value = 0.0
plt.errorbar(exact, estimated, marker='.', label=param, color='k',
linestyle='None', capsize=0.)
plt.plot(range_exact, range_exact, color='r', label='1-to-1')
plt.plot(range_exact, slope * range_exact + intercept, color='b',
label='exact-fit $r^2$ = {:.2f}'.format(r_value**2))
plt.xlabel('Exact')
plt.ylabel('Estimated')
plt.title(param)
plt.legend(loc='best', fancybox=True, framealpha=0.5, numpoints=1)
plt.minorticks_on()
if nologo is False:
image = plt.imread(pkg_resources.resource_filename(__name__,
"data/CIGALE.png"))
plt.figimage(image, 510, 55, origin='upper', zorder=10, alpha=1)
plt.tight_layout()
plt.savefig('out/mock_{}.pdf'.format(param))
plt.close()
def chi2(config):
"""Plot the χ² values of analysed variables.
"""
input_data = read_table(config.configuration['data_file'])
chi2_vars = config.configuration['analysis_params']['variables']
chi2_vars += [band for band in config.configuration['bands']
if band.endswith('_err') is False]
with mp.Pool(processes=config.configuration['cores']) as pool:
items = product(input_data['id'], chi2_vars)
pool.starmap(_chi2_worker, items)
pool.close()
pool.join()
def pdf(config):
"""Plot the PDF of analysed variables.
"""
input_data = read_table(config.configuration['data_file'])
pdf_vars = config.configuration['analysis_params']['variables']
pdf_vars += [band for band in config.configuration['bands']
if band.endswith('_err') is False]
with mp.Pool(processes=config.configuration['cores']) as pool:
items = product(input_data['id'], pdf_vars)
pool.starmap(_pdf_worker, items)
pool.close()
pool.join()
def sed(config, sed_type, nologo):
"""Plot the best SED with associated observed and modelled fluxes.
"""
obs = read_table(config.configuration['data_file'])
mod = Table.read('out/' + BEST_RESULTS)
with Database() as base:
filters = OrderedDict([(name, base.get_filter(name))
for name in config.configuration['bands']
if not (name.endswith('_err') or name.startswith('line')) ])
with mp.Pool(processes=config.configuration['cores']) as pool:
pool.starmap(_sed_worker, zip(obs, mod, repeat(filters),
repeat(sed_type), repeat(nologo)))
pool.close()
pool.join()
def mock(config, nologo):
"""Plot the comparison of input/output values of analysed variables.
"""
try:
exact = Table.read('out/' + BEST_RESULTS)
except FileNotFoundError:
print("Best models file {} not found.".format('out/' + BEST_RESULTS))
sys.exit(1)
try:
estimated = Table.read('out/' + MOCK_RESULTS)
except FileNotFoundError:
print("Mock models file {} not found.".format('out/' + MOCK_RESULTS))
sys.exit(1)
params = config.configuration['analysis_params']['variables']
for param in params:
if param.endswith('_log'):
param = "best."+param
exact[param] = np.log10(exact[param[:-4]])
arguments = ((exact["best."+param], estimated["bayes."+param], param, nologo)
for param in params)
with mp.Pool(processes=config.configuration['cores']) as pool:
pool.starmap(_mock_worker, arguments)
pool.close()
pool.join()
def main():
if sys.version_info[:2] >= (3, 4):
......@@ -505,20 +38,26 @@ def main():
subparsers = parser.add_subparsers(help="List of commands")
pdf_parser = subparsers.add_parser('pdf', help=pdf.__doc__)
pdf_parser = subparsers.add_parser('pdf', help=pdf_action.__doc__)
pdf_parser.set_defaults(parser='pdf')
chi2_parser = subparsers.add_parser('chi2', help=chi2.__doc__)
chi2_parser = subparsers.add_parser('chi2', help=chi2_action.__doc__)
chi2_parser.set_defaults(parser='chi2')
sed_parser = subparsers.add_parser('sed', help=sed.__doc__)
sed_parser = subparsers.add_parser('sed', help=sed_action.__doc__)
sed_parser.add_argument('--type', default='mJy')
sed_parser.add_argument('--nologo', action="store_true")
sed_parser.add_argument('--nologo', action='store_true')
sed_parser.add_argument('--best-results-file', dest='best_results_file',
default='out/results.fits')
sed_parser.set_defaults(parser='sed')
sed_parser = subparsers.add_parser('mock', help=mock.__doc__)
sed_parser.add_argument('--nologo', action="store_true")
sed_parser.set_defaults(parser='mock')
mock_parser = subparsers.add_parser('mock', help=mock_action.__doc__)
mock_parser.add_argument('--nologo', action='store_true')
mock_parser.add_argument('--best-results-file', dest='best_results_file',
default='out/results.fits')
mock_parser.add_argument('--mock-results-file', dest='mock_results_file',
default='out/results_mock.fits')
mock_parser.set_defaults(parser='mock')
args = parser.parse_args()
......@@ -531,10 +70,10 @@ def main():
parser.print_usage()
else:
if args.parser == 'chi2':
chi2(config)
chi2_action(config)
elif args.parser == 'pdf':
pdf(config)
pdf_action(config)
elif args.parser == 'sed':
sed(config, args.type, args.nologo)
sed_action(config, args.type, args.best_results_file, args.nologo)
elif args.parser == 'mock':
mock(config, args.nologo)
mock_action(config, args.best_results_file, args.mock_results_file, args.nologo)
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