mysort sorts a multivariate data matrix so that records with
identical patterns of missingness are adjacent to one another.
mysort is a private function used inside of mlest.
mysort(x)A matrix of the same size as x but with the
rows re-arranged so that records with identical patterns of
missingness are adjacent to one another.
An integer vector giving the number of records in each
block of rows with a unique pattern of missingness. The first
element in freq counts the number of rows in the top block
of sorted.data, and so on.
A multivariate data matrix. Rows correspond to individual records and columns correspond to components of the multivariate vector.
mlest