plot_mcmc_comparison

ell1fit.mcmc_utils.plot_mcmc_comparison(samples_list, labels_list, names, fname, colors=None, **corner_kwargs)

Overlay two or more posteriors on their shared parameter subspace.

Built for comparing nested models that share a prefix of parameters (e.g. ell1decay’s M0/M1 delta_tasc fits, which share beta[0..2] and differ only in whether beta[3] exists): each sample set is restricted to the labels common to every set (order taken from labels_list[0]), then overlaid on one figure via corner’s own documented two-dataset pattern – call corner.corner once per set, reusing the returned fig.

Parameters:

samples_listlist of array-like

One flat-samples array per model, shape (nsamples_i, ndim_i).

labels_listlist of list of str

That model’s parameter labels, same order as its samples’ columns.

nameslist of str

Legend entry per model (e.g. ["M0", "M1"]).

colorslist of str or None

One color per model. Defaults to matplotlib’s own color cycle.