Calculate observed-data sufficient statistics, marginally-observed summary statistics or enumerate all possible observed patterns from a multivariate multinomial dataset.
output: A string specifying the desired output. One of c("x_y", "z_Os_y", "possible.obs"). "x_y" indicates the observed-data sufficient statistics, "z_Os_y" indicates the marginally-observed summary statistics, and "possible.obs" indicates the possible observed patterns.
Returns
A data.frame containing either sufficient statistics or possible observed patterns.