A simple helper function that converts a Samples object from the fit of an
ordinal CRM model to that which would have been obtained from fitting a binary
CRM model for toxicities of a specified grade to the same observed data.
h_convert_ordinal_samples(obj, grade)A Samples object.
(Samples)
the Samples object to covert
(integer)
the toxicity grade for which the equivalent data
is required.