get_prior
- sherpa.ui.get_prior(par)
Return the prior function for a parameter (MCMC).
The default behavior of the pyBLoCXS MCMC sampler (run by the
get_draws
function) is to use a flat prior for each parameter. Theget_prior
routine finds the current prior assigned to a parameter, andset_prior
is used to change it.- Parameters
par (a
sherpa.models.parameter.Parameter
instance) – A parameter of a model instance.- Returns
The parameter prior set by a previous call to
set_prior
. This may be a function or model instance.- Return type
prior
- Raises
ValueError – If a prior has not been set for the parameter.
See also
set_prior
Set the prior function to use with a parameter.
Examples
>>> prior = get_prior(bgnd.c0) >>> print(prior)