Hi list, I dont know why the top of map gets truncated: I appreciate if any one give me a solution. filename="C:\\temp\\test.pdf" pdf(file=filename, width=15, height=10) library(maps) require("mapproj") longlatLimit<-c(-106.65, -93.53 , 25.93 , 36.49) par(plt=c(0,1,0,1),cex=1,cex.main=1) #Set plotting parameters map(projection="azequalarea", type="n",xlim=longlatLimit[1:2],ylim=longlatLimit[3:4]) bound<-c(floor(longlatLimit[1]), ceiling(longlatLimit[2]), floor(longlatLimit[3]), ceiling(longlatLimit[4])) map.grid(lim=bound,col="light grey") dev.off() Regards, Alireza [[alternative HTML version deleted]]