I think you want to change par()$lend Type
par() <enter> to see the defaults. In your situation you might want to begin with something like dev.off() par(mar=c(4,6,4,5)+0.1, lend=2) ... then your plotting logic ... Where the "mar" argument adjusts the margins. (You can omit this if you're happy with the defaults.) And the line end, lend=2, makes the ends square. Best wishes. Charles Annis, P.E. [EMAIL PROTECTED] phone: 561-352-9699 eFax: 614-455-3265 http://www.StatisticalEngineering.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Robert Offinger Sent: Sunday, June 04, 2006 11:24 AM To: r-help@stat.math.ethz.ch Subject: [R] slanted ends of horizontal lines for certain line widths Hello, if I plot a horizontal line, e.g., plot(c(1,2),c(1,1),xlim=c(0,3),lwd=2,type="l") or plot(c(1,2),c(1,1),xlim=c(0,3),lwd=4,type="l") then the left end (1st example) or both ends (2nd example) of the lines are not rectangular but slanted on the graphical display (screen). That behavour first occurred when I was trying to plot a stepfun, e.g., y <- round(rnorm(12),1) Fn12 <- ecdf(y) plot(Fn12,verticals= FALSE, do.p = FALSE,lwd=2,col.h="red") plot(Fn12,verticals= FALSE, do.p = FALSE,lwd=4,col.h="red") (lwd=3 seems okay) Bug or feature? Suggestions? (I don't like the slanted ends but lwd=2 would be better than lwd=3) Robert Offinger OvG-Universität Magdeburg ---- platform sparc-sun-solaris2.9 arch sparc os solaris2.9 system sparc, solaris2.9 status major 2 minor 3.1 year 2006 month 06 day 01 svn rev 38247 language R version.string Version 2.3.1 (2006-06-01) ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html