Save pheatmap figure into pdf

save_pheatmap_pdf.R

# An R function to save pheatmap figure into pdf
# This was copied from Stackflow: https://stackoverflow.com/questions/43051525/how-to-draw-pheatmap-plot-to-screen-and-also-save-to-file


save_pheatmap_pdf <- function(x, filename, width=7, height=7) {
    stopifnot(!missing(x))
    stopifnot(!missing(filename))
    pdf(filename, width=width, height=height)
    grid::grid.newpage()
    grid::grid.draw(x$gtable)
    dev.off()
}