\HeaderA{maInd2Coord}{Convert spot indices to grid and spot matrix coordinates}{maInd2Coord}
\keyword{manip}{maInd2Coord}
\keyword{methods}{maInd2Coord}
\begin{Description}\relax
This functions converts spot indices to grid and spot matrix coordinates (four
coordinates), where spots on the array are numbered consecutively starting
from the top left grid and the top left spot within each grid.
\end{Description}
\begin{Usage}
\begin{verbatim}
maInd2Coord(x, L)
\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{x}] a numeric vector of spot indices.
\item[\code{L}] an object of class \code{"\LinkA{marrayLayout}{marrayLayout}"}.
\end{ldescription}
\end{Arguments}
\begin{Value}
a matrix of spot four-coordinates, with rows corresponding to
spots and columns to grid row, grid column, spot row, and spot column coordinates.
\end{Value}
\begin{Author}\relax
Yee Hwa (Jean) Yang, Sandrine Dudoit, \url{http://www.stat.berkeley.edu/~sandrine}.
\end{Author}
\begin{SeeAlso}\relax
\code{\LinkA{marrayLayout}{marrayLayout}}, \code{\LinkA{maCoord2Ind}{maCoord2Ind}},
\code{\LinkA{maCompCoord}{maCompCoord}}, \code{\LinkA{maCompInd}{maCompInd}}.
\end{SeeAlso}
\begin{Examples}
\begin{ExampleCode}

L <- new("marrayLayout", maNgr=4, maNgc=4, maNsr=22, maNsc=24)
maInd2Coord(c(1:10,529:538), L)

\end{ExampleCode}
\end{Examples}