Hi, I am trying to plot multiple lines on one plot such that all lines are of the same color (black) and continuous. I need to distinguish these multiple plots from each other by using different symbols (I am using pch=). However, all my lines are broken on both sides of the symbols. This unfortunate (and unsightly) behavior seems to be the default. In my search of the help archives for R over several days, I have not been able to solve this problem. I would appreciate any help and suggestions. My code for the plot is below (minus the data):
exa1.1 <- read.table("multcol.txt", header=T, sep=' ')# Total of 4 columns; first one to be on x-axis attach(exa1.1) names(exa1.1) exa1.1 plot(exa1.1$Year, exa1.1$EM, ylim=range(exa1.1[,-1]), type = 'b' ,pch=16, main = ""), las=1, cex.main=1.75,lab =c(12,8,10), ylab="", xlab="", ) lines(exa1.1$Year,exa1.1$IM,type='b', pch=1) lines(exa1.1$Year,exa1.1$BM,type='b', pch=17) mtext(side = 2, text = "Klett units", line = 3.5, cex=1.2) mtext(side = 1, text = expression(Time~at~37*degree*C~(minutes)), line = 2.75,cex=1.2) Regards, Tariq [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.