Hi all, I am new in R. I am trying to panel spplot and hist. spplot(hspdf, "CDP", col = "white", col.regions = blue2red(20), sp.layout list(l2), at = seq(1,10,1), colorkey = list(space = "bottom", labels list(labels = paste(seq(1,10,1)), cex = 1.5)), sub = list("CDP", cex = 1.5, font = 2)) hist(cdp.obsc, col="grey", border="grey", main="CDP", probability=T) lines(c.breaks, obs.cdp.d, col="blue") lines(c.breaks, obs.cdp.e, col="red") I have tried with par(mfrow=c(2,1))and layout(matrix...., both don't work. Any advice? with regards -Pai [[alternative HTML version deleted]]