\Header{complete.cases}{Find Complete Cases}
\keyword{NA}{complete.cases}
\keyword{logic}{complete.cases}
\begin{Usage}
\begin{verbatim}
complete.cases(...)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\texttt{...}] a sequence of vectors, matrices and data frames.
\end{ldescription}
\end{Arguments}
\begin{Value}
A logical vector specifying which
observations/rows have no missing values across the entire sequence.\end{Value}
\begin{SeeAlso}
\texttt{\Link{is.na}}, \texttt{\Link{na.omit}}, \texttt{\Link{na.fail}}.\end{SeeAlso}
\begin{Examples}
\begin{ExampleCode}
data(airquality)
x <- airquality[, -1] # x is a regression design matrix
y <- airquality[,  1] # y is the corresponding response

all(!complete.cases(y) == is.na(y)) #--> TRUE
ok <- complete.cases(x,y)
sum(!ok) # how many are not "ok" ?
x <- x[ok,]
y <- y[ok]
\end{ExampleCode}
\end{Examples}

