Commit ab1d209f authored by Denis's avatar Denis

add residuals to pcigale-plots sed

parent d9d225e7
......@@ -21,6 +21,7 @@ import os
from import Database
from pcigale.utils import read_table
from pcigale.session.configuration import Configuration
import matplotlib.gridspec as gridspec
# Name of the file containing the best models information
BEST_MODEL_FILE = "best_models.txt"
......@@ -107,32 +108,58 @@ def _sed_worker(obs, mod, filters):
for filt in filters.values()])
obs_fluxes = np.array([obs[filt] for filt in filters.keys()])
mod_fluxes = np.array([mod[filt] for filt in filters.keys()])
xmin = PLOT_L_MIN * (1. + obs['redshift'])
xmax = PLOT_L_MAX * (1. + obs['redshift'])
wsed = np.where((sed['wavelength'] > xmin)&(sed['wavelength'] < xmax))
figure = plt.figure()
ax = figure.add_subplot(111)
ax.loglog(sed['wavelength'][wsed], sed['F_nu'][wsed],
gs = gridspec.GridSpec(2, 1, height_ratios=[3, 1])
ax1 = plt.subplot(gs[0])
ax2 = plt.subplot(gs[1])
ax1.loglog(sed['wavelength'][wsed], sed['F_nu'][wsed],
label="Model spectrum",color='k')
ax.scatter(filters_wl, mod_fluxes, marker='o', color='r',
ax1.scatter(filters_wl, mod_fluxes, marker='o', color='r',
label="Model fluxes")
ax.scatter(filters_wl, obs_fluxes, marker='o', color='b',
ax1.scatter(filters_wl, obs_fluxes, marker='o', color='b',
label="Observed fluxes")
ax.set_xlim(xmin, xmax)
ax.set_xlabel("Wavelength [nm]")
ax.set_ylabel("Flux [mJy]")
ax.legend(loc='lower right')
figure.suptitle("Best model for {}. z = {}. Reduced $\chi^2$={}.".format(
np.round(obs['redshift'], decimals=2),
np.round(mod['reduced_chi_square'], decimals=2)))
mask = obs_fluxes != -9999.
ax2.semilogx(filters_wl[mask], (obs_fluxes[mask]-mod_fluxes[mask])/obs_fluxes[mask],
marker='o', color='k',
label="(Obs - Mod) / Obs")
ax1.set_xlim(xmin, xmax)
ax2.set_xlim(xmin, xmax)
ax2.set_ylim(-1.0, 1.0)
ax2.set_xlabel("Observed wavelength [nm]")
ax1.set_ylabel("Flux [mJy]")
ax2.set_ylabel("Relative residual flux")
ax1.legend(loc='upper left', fontsize=10)
ax2.legend(loc='upper right', fontsize=10)
figure.suptitle("Best model for {} at z = {}. Reduced $\chi^2$={}".
obs['id'], np.round(obs['redshift'], decimals=3),
np.round(mod['reduced_chi_square'], decimals=2))
figure.savefig(OUT_DIR + "{}_best_model.pdf".format(obs['id']))
print("No SED found for {}. No plot created.".format())
print("No SED found for {}. No plot created.".format(obs['id']))
def chi2(config):
"""Plot the χ² values of analysed variables.
input_data = read_table(config.configuration['data_file'])
chi2_vars = (config.configuration['analysis_method_params']
with mp.Pool(processes=config.configuration['cores']) as pool:
items = product(input_data['id'], chi2_vars)
pool.starmap(_chi2_worker, items)
def chi2(config):
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