Tena koe Henrik Not exactly what you are requesting but you could draw a solid line and then the dashed line over the top:
plot(1:10, panel.first=abline(0, 1, col='red', lwd=2), panel.last=abline(0, 1, col='blue', lty='88', lwd=2)) or plot(1:10) abline(0, 1, col='red', lwd=2) abline(0, 1, col='blue', lty='88', lwd=2)) This may be system or graphics device dependent (I'm using Windows). HTH .... Peter Alspach > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Henrik Bengtsson > Sent: Monday, 11 October 2010 10:50 a.m. > To: r-help > Subject: [R] Line Type Specification: lty="<on><off>" but > lty="<off><on>"? > > Hi, > > Section 'Line Type Specification' in help(par) explains how you can do > custom line types. For example: > > plot(NA, xlim=c(0,1), ylim=c(0,1)); > abline(h=1/2, col="blue", lwd=2, lty="88"); > > will draw a dashed line segment where the line is composed of 8 units > of "on" (blue color) and 8 units of "off" (transparent), then > repeated. > > Now I'd like to draw a second red line overlapping this one, but where > the "gaps" are now red. Technically, I think the following would > define that: > > abline(h=1/2, col="red", lwd=2, lty="0880"); > > that is 0 "on", 8 "off", 8 "on" (red color) and 0 "off", then repeated. > > However, zeros are not allowed (actually, why not?) > > Any suggestions to draw one red and one blue dashed lines that, if > overlapping, the the overlapping segments will be blue, red, blue, > red, ...? > > /Henrik > > ______________________________________________ > 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. The contents of this e-mail are confidential and may be subject to legal privilege. If you are not the intended recipient you must not use, disseminate, distribute or reproduce all or any part of this e-mail or attachments. If you have received this e-mail in error, please notify the sender and delete all material pertaining to this e-mail. Any opinion or views expressed in this e-mail are those of the individual sender and may not represent those of The New Zealand Institute for Plant and Food Research Limited. ______________________________________________ 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.
