bm to each column of a matrix or data frame of MCMC samples.bm to each column of a matrix or data frame
of MCMC samples.bmmat(x)bmmat returns a matrix with ncol(x) rows
and two columns. The row names of the matrix are the same
as the column names of x. The column names of the
matrix are "est" and "se". The $j$th
row of the matrix contains the result of applying
bm to the $j$th column of x.bm, which performs consistent batch means
estimation for a vector.