In your plot and lines function call you specify type="b" which says to use "b"oth lines and points with gaps in the lines around the points. If you change that to type="o" then it will "o"verplot the points and lines (no gaps).
The different types are documented in ?plot.default. Hope this helps, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare [EMAIL PROTECTED] (801) 408-8111 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Tariq Perwez > Sent: Tuesday, June 10, 2008 10:14 AM > To: r-help@r-project.org > Subject: [R] Plotting multiple continuous lines with symbols > > 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. > ______________________________________________ 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.
