Distribution-class: S4 Class: Distribution
In patrickreidy/distdist: Distances on Distributions

The Distribution class represents discrete probability distributions.

.Data: A data frame, with n > 1 columns, that defines a probability mass function that associates probabilities to a finite number of values assumed by a random variable. Columns 1 to n-1 determine the values assumed by the random variable; none of these columns should be named "P". Column n defines the probability assigned to each value assumed by the random variable; this column must be named "P".