\HeaderA{mapasp}{Calculate aspect ratio for plotting geographic maps}{mapasp}
\keyword{dplot}{mapasp}
\begin{Description}\relax
Calculate aspect ratio for plotting geographic maps
\end{Description}
\begin{Usage}
\begin{verbatim} mapasp(data) \end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{data}] object of class \code{SpatialData}, or a class that extends
\code{SpatialData} such as \code{SpatialDataFrame} or 
\code{SpatialDataFrameGrid}
\end{ldescription}
\end{Arguments}
\begin{Value}
diff(range(y))/diff(range(x)), but then derived from slot(data, "bbox")
\end{Value}
\begin{SeeAlso}\relax
\LinkA{levelplot}{levelplot} in package \code{lattice}
\end{SeeAlso}

