Fetches matrix of posterior draws for partial proportional odds parameters (taus) for a given intercept. Can also form a matrix containing both regular parameters and taus, or for just non-taus. For the constrained partial proportional odds model the function returns the appropriate cppo
function value multiplied by tau (tau being a vector in this case and not a matrix).
tauFetch(fit, intercept, what = c("tau", "nontau", "both"))
matrix with number of raws equal to the numnber of original draws
an object created by blrm()
integer specifying which intercept to fetch
specifies the result to return
Frank Harrell