R/multiPlot.R

In dinilu/paleoCLMs-package: Miscelanea package for paleoCLMs project

multiPlot <-
function(..., plotlist=NULL, cols=1, layout=NULL) {
  # Make a list from the ... arguments and plotlist
  plots <- c(list(...), plotlist)
  numPlots = length(plots)
  # If layout is NULL, then use 'cols' to determine layout
  if (is.null(layout)) {
    # Make the panel
    # ncol: Number of columns of plots
    # nrow: Number of rows needed, calculated from # of cols
    layout <- matrix(seq(1, cols * ceiling(numPlots/cols)), ncol=cols, nrow=ceiling(numPlots/cols))
  }
 if (numPlots==1) {
    print(plots[[1]])
  }else{
    # Set up the page
    grid.newpage()
    pushViewport(viewport(layout = grid.layout(nrow(layout), ncol(layout))))
    # Make each plot, in the correct location
    for (i in 1:numPlots) {
      # Get the i,j matrix positions of the regions that contain this subplot
      matchidx <- as.data.frame(which(layout == i, arr.ind = TRUE))
      print(plots[[i]], vp=viewport(layout.pos.row=matchidx$row, layout.pos.col=matchidx$col))
    }
  }
}