missPatterns.Rd
\name{missPatterns}
\alias{missPatterns}
\alias{zeroPatterns}
\title{
missing or zero pattern structure.
}
\description{
Analysis of the missing or zero patterns structure of a data set.
}
\usage{
missPatterns(x)
zeroPatterns(x)
}
\arguments{
\item{x}{
a data frame or matrix.
}
}
\details{
Here, one pattern defines those observations that have the same structure regarding their
missingness or zeros. For all patterns a summary is calculated.
}
\value{
\item{groups }{List of the different patterns and the observation numbers for each pattern}
\item{cn }{the names of the patterns coded as vectors of 0-1's}
\item{tabcomb}{the pattern structure - all combinations of zeros or missings in the variables}
\item{tabcombPlus}{the pattern structure - all combinations of zeros or missings in the variables  including the size of those combinations/patterns, i.e. the number of observations that belongs to each pattern.}
\item{rsum}{the number of zeros or missing values in each row of the data set}
}
\author{
Matthias Templ. The code is based on a previous version from Andreas Alfons and Matthias Templ from package VIM
}
\seealso{