R tip: Export a ggplot plot in PDF, EPS and PNG files

export_plot.R

ExportPlot <- function(gplot, filename, width=2, height=1.5) {
    # Export plot in PDF and EPS.
    # Notice that A4: width=11.69, height=8.27
    ggsave(paste(filename, '.pdf', sep=""), gplot, width = width, height = height)
    postscript(file = paste(filename, '.eps', sep=""), width = width, height = height)
    print(gplot)
    dev.off()
    png(file = paste(filename, '_.png', sep=""), width = width * 100, height = height * 100)
    print(gplot)
    dev.off()
}