\HeaderA{map\_colour\_gradient}{Aesthetic mapping: colour gradient}{map.Rul.colour.Rul.gradient}
\aliasA{map\_color\_gradient}{map\_colour\_gradient}{map.Rul.color.Rul.gradient}
\keyword{hplot}{map\_colour\_gradient}
\begin{Description}\relax
Map values to a colour gradient
\end{Description}
\begin{Usage}
\begin{verbatim}map_colour_gradient(x, low="red", mid="white",high="black", midpoint = 0, from=range(x, na.rm=TRUE))\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{x}] data vector
\item[\code{low}] colour to use at bottom of scale
\item[\code{mid}] colour to use at middle of scale
\item[\code{high}] colour to use at top of scale
\item[\code{midpoint}] where mid point colour should be used
\item[\code{from}] 
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
\end{Details}
\begin{Author}\relax
Hadley Wickham <h.wickham@gmail.com>
\end{Author}
\begin{Examples}
\begin{ExampleCode}\end{ExampleCode}
\end{Examples}

