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authorAaron LI <aaronly.me@outlook.com>2016-06-27 16:52:40 +0800
committerAaron LI <aaronly.me@outlook.com>2016-06-27 16:52:40 +0800
commitd9f691c7961c3ea8ff196f1668b0444f86bf75aa (patch)
treeeb680c7d59cc08744ee5a49f6aed6fa89f1bcc5b
parentc148f74aa54460106db5be4125a0d4b8b8bb141a (diff)
downloadcexcess-d9f691c7961c3ea8ff196f1668b0444f86bf75aa.tar.bz2
deproject_sbp.py: split out method "save()"
-rwxr-xr-xdeproject_sbp.py48
1 files changed, 32 insertions, 16 deletions
diff --git a/deproject_sbp.py b/deproject_sbp.py
index 3e60556..413cb03 100755
--- a/deproject_sbp.py
+++ b/deproject_sbp.py
@@ -6,6 +6,7 @@
#
# Change logs:
# 2016-06-26:
+# * Split out method "save()" for class "BrightnessProfile"
# * Split classes 'FitModel', 'ABModel' and 'PLCModel' into separate
# module 'fitting_models.py'
# 2016-06-25:
@@ -641,6 +642,12 @@ class BrightnessProfile:
pixel = None
# flag to indicate whether the units are converted
units_converted = False
+ # fitted smoothing spline to the SBP
+ s_spline = None
+ # calculated electron density profile
+ ne = None
+ # calculated gas mass density profile
+ rho_gas = None
def __init__(self, sbp_data, cf_data, z):
self.load_data(data=sbp_data)
@@ -678,7 +685,7 @@ class BrightnessProfile:
def get_radius(self):
return (self.r.copy(), self.r_err.copy())
- def calc_electron_density(self, outfile=None):
+ def calc_electron_density(self):
"""
Deproject the surface brightness profile to derive the 3D
electron number density (and then gas mass density) profile
@@ -696,15 +703,9 @@ class BrightnessProfile:
em_v = s_deproj / cf_spline(self.r)
ne = np.sqrt(em_v * AstroParams.ratio_ne_np)
self.ne = ne
- # save results to output if specified
- if outfile is not None:
- ne_profile = np.column_stack([self.r, self.r_err, ne])
- np.savetxt(outfile, ne_profile,
- header="radius[cm] radius_err[cm] " +
- "electron_number_density[cm^-3]")
return ne
- def calc_gas_density(self, outfile=None):
+ def calc_gas_density(self):
"""
Calculate the gas mass density based the calculated electron
number density.
@@ -714,14 +715,25 @@ class BrightnessProfile:
ne = self.calc_electron_density()
rho = ne * AstroParams.mu_e * AstroParams.m_atom
self.rho_gas = rho
- # save results to output if specified
- if outfile is not None:
- rho_profile = np.column_stack([self.r, self.r_err, rho])
- np.savetxt(outfile, rho_profile,
- header="radius[cm] radius_err[cm] " +
- "gas_mass_density[g/cm^3]")
return rho
+ def save(self, density_type, outfile):
+ if density_type == "electron":
+ data = np.column_stack([self.r,
+ self.r_err,
+ self.ne])
+ header = "radius[cm] radius_err[cm] " + \
+ "electron_number_density[cm^-3]"
+ elif density_type == "gas":
+ data = np.column_stack([self.r,
+ self.r_err,
+ self.rho_gas])
+ header = "radius[cm] radius_err[cm] " + \
+ "gas_mass_density[g/cm^3]"
+ else:
+ raise ValueError("unknown density_type: %s" % density_type)
+ np.savetxt(outfile, data, header=header)
+
def plot(self, ax=None, fig=None, density_type="electron"):
if density_type not in self.DENSITY_TYPES:
raise ValueError("invalid density_types: %s" % density_type)
@@ -829,8 +841,12 @@ def main():
cf_data=cf_data,
z=redshift)
brightness_profile.convert_units()
- brightness_profile.calc_electron_density(outfile=config["ne_profile"])
- brightness_profile.calc_gas_density(outfile=config["rho_gas_profile"])
+ brightness_profile.calc_electron_density()
+ brightness_profile.save(density_type="electron",
+ outfile=config["ne_profile"])
+ brightness_profile.calc_gas_density()
+ brightness_profile.save(density_type="gas",
+ outfile=config["rho_gas_profile"])
fig = Figure(figsize=(10, 8))
FigureCanvas(fig)
ax = fig.add_subplot(1, 1, 1)