======================= ProbabilityDict2D class ======================= This class is same as the `ProbabilityDict class <ProbabilityDict.html>`_ but instead of storing the one dimensional PDFs for a given parameter, it stores the 2D PDF for 2 parameters. The 2D analytic PDF is stored as a `DiscretePDF2D object <pdf.html>`_. .. autoclass:: pesummary.utils.probability_dict.ProbabilityDict2D