API¶
Prior functions¶
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class
lightspot.priors.Dirac(x0)¶ Bases:
lightspot.priors.Prior-
sample(*args)¶
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class
lightspot.priors.LogNormal(logmu=0.0, logsd=1.0, ndim=1)¶ Bases:
lightspot.priors.Prior-
sample(*args)¶
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class
lightspot.priors.LogUniform(logxmin=0.0, logxmax=1.0, ndim=1)¶ Bases:
lightspot.priors.Prior-
sample(*args)¶
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class
lightspot.priors.Normal(mu=0.0, sd=1.0, ndim=1)¶ Bases:
lightspot.priors.Prior-
sample(*args)¶
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class
lightspot.priors.Polygon(poly)¶ Bases:
lightspot.priors.Prior-
sample(*args)¶
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class
lightspot.priors.Quadratic(amin=0.0, amax=2.0, bmin=- 1.0, bmax=1.0)¶ Bases:
lightspot.priors.Prior-
sample(*args)¶
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class
lightspot.priors.SameAs(prior)¶ Bases:
lightspot.priors.Prior-
sample(*args)¶
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class
lightspot.priors.SineUniform(sinxmin=0.0, sinxmax=1.0, ndim=1)¶ Bases:
lightspot.priors.Prior-
sample(*args)¶
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class
lightspot.priors.ThreeParam¶ Bases:
lightspot.priors.Prior-
sample(*args)¶
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class
lightspot.priors.Triangular(triangle)¶ Bases:
lightspot.priors.Prior-
sample(*args)¶
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class
lightspot.priors.TruncNormal(mu=0.0, sd=1.0, xmin=0.0, xmax=1.0, ndim=1)¶ Bases:
lightspot.priors.Prior-
sample(*args)¶
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class
lightspot.priors.Uniform(xmin=0.0, xmax=1.0, ndim=1)¶ Bases:
lightspot.priors.Prior-
sample(*args)¶
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lightspot.priors.constrain_Pvec(Pmin=0, Pmax=50, sinimin=0, sinimax=1, vmin=1e-09, vmax=1000000000.0, rmin=1e-09, rmax=1000000000.0)¶
Modeler classes¶
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class
lightspot.model.SpotModel(t, y, nspots, dy=None, use_gpu=False, Pvec=None, k2=None, k4=None, c=None, d=None, same_limb=False, lon=None, lat=None, alpha=None, fspot=None, tmax=None, life=None, ingress=None, egress=None, U=None, B=None, tstart=None, tend=None)¶ Bases:
objectModeler class
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t¶ - Type
time array
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y¶ - Type
flux array
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nspots¶ - Type
number of spots
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dy¶ - Type
flux uncertainties (optional)
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Pvec¶ - Type
2-D array containing rotation period at equator and stellar inclination
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k2¶ - Type
2nd-order differential rotation coefficient
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k4¶ - Type
4th-order differential rotation coefficient
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c¶ - Type
stellar limb-darkening coefficients
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d¶ - Type
spot limb-darkening coefficients
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same_limb¶ - Type
whether to always assume c==d in the model
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lon¶ - Type
spot longitudes (rad)
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lat¶ - Type
spot latitudes (rad)
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alpha¶ - Type
spot radius (rad)
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fspot¶ - Type
spot-to-photosphere intensity ratio
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tmax¶ - Type
time of greatest spot area
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life¶ - Type
spot lifetimes
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ingress¶ - Type
spot ingress times
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egress¶ - Type
spot egress times
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U¶ - Type
unspotted surface flux value
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B¶ - Type
instrumental blending factor
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tstart¶ - Type
start time for each of the stitched curves
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tend¶ - Type
end time for each of the stitched curves
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chi(theta)¶ Chi squared of parameters given a set of observations
- Parameters
theta (array-like with shape (N,)) – full parameter vector (physical units)
- Returns
sse – sum of squared errors weighted by observation uncertainties
- Return type
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property
inst_pars¶
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loglike(x)¶
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multinest(sampling_efficiency=0.01, const_efficiency_mode=True, n_live_points=4000, **kwargs)¶
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property
parameters¶
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predict(t, theta)¶ Calculates the model flux for given parameter values
- Parameters
t (array-like with shape (n,)) – time samples where the flux function should be evaluated
theta (array-like with shape (N,)) – full parameter vector (physical units)
- Returns
yf – model flux
- Return type
array-like with shape (n,)
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reduced_chi(theta)¶
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run(nlive=1000, cores=None, filename=None, **kwargs)¶
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sample(x)¶
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property
spot_pars¶
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property
star_pars¶
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