rcParams

Class to contain ArviZ default parameters.

It is implemented as a dict with validation when setting items.

Return a context manager for managing rc settings.

Parameters
----------
rc : dict, optional
    Mapping containing the rcParams to modify temporally.
fname : str, optional
    Filename of the file containing the rcParams to use inside the rc_context.

Examples
--------
This allows one to do::

    with az.rc_context(fname='pystan.rc'):
        idata = az.load_arviz_data("radon")
        az.plot_posterior(idata, var_names=["gamma"])

The plot would have settings from 'screen.rc'

A dictionary can also be passed to the context manager::

    with az.rc_context(rc={'plot.max_subplots': None}, fname='pystan.rc'):
        idata = az.load_arviz_data("radon")
        az.plot_posterior(idata, var_names=["gamma"])

The 'rc' dictionary takes precedence over the settings loaded from
'fname'. Passing a dictionary only is also valid.