\Header{tfspan}{Time Span}
\keyword{programming}{tfspan}
\keyword{utilities}{tfspan}
\keyword{ts}{tfspan}
\keyword{chron}{tfspan}
\begin{Description}\relax
Calculate Time Span of Objects.
\end{Description}
\begin{Usage}
\begin{verbatim}
    tfspan(x, ...)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{x}] a tframe or a tframed object.
\item[\code{...}] other tframes or tframed objects.
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
Calculate the time frame from the earliest start to latest end of all
arguments.
\end{Details}
\begin{Value}
A tframe\end{Value}
\begin{SeeAlso}\relax
\code{\Link{tframe}}, 
\code{\Link{tframed}}
\code{\Link{start}}
\code{\Link{end}}
\code{\Link{frequency}}
\code{\Link{periods}}
\code{\Link{time}}
\end{SeeAlso}
\begin{Examples}
\begin{ExampleCode}
    z  <- ts(rnorm(100), start=c(1982,1), frequency=12)
    zz <- ts(rnorm(100), start=c(1992,1), frequency=12)
    tfspan(z, zz)
\end{ExampleCode}
\end{Examples}

