% Generated by roxygen2 (4.1.1): do not edit by hand
% Please edit documentation in R/raster_plots.R
\name{start_rasterplot}
\alias{start_rasterplot}
\title{start_rasterplot}
\usage{
start_rasterplot(width = NULL, height = NULL)
}
\arguments{
\item{width}{Width in pixels of raster image}

\item{height}{Height in pixels of raster image. In general only
one of \code{width} or \code{height} should be provided.}
}
\description{
Start a raster plot with indicated width or height in pixels
}
\details{
This creates a Cairo device with output to /dev/null of width or
height given (defaulting to a width of 1024)
}
\examples{
\dontrun{
### plot a raster plot in a PDF
pdf()
start_rasterplot()
print(xyplot(y~x,
     data=data.frame(y=rnorm(1E8),x=rnorm(1E8))))
stop_rasterplot()
dev.off()
}

### plot a raster plot using grid.raster
start_rasterplot(width=100)
print(plot(y~x,
            data=data.frame(y=rnorm(1E4),
                            x=rnorm(1E4))))
raster.image <- stop_rasterplot(plot=FALSE)
grid::grid.raster(raster.image)
}
\author{
Don Armstrong
}