maybe something like this could help: x <- data.frame(a = 1:9, beta = exp(-4:4), logic = rep(c(TRUE, FALSE), c(5, 4))) x.l <- split(x, x$logic)
plot(x$a, x$beta) mapply(function(x, y) lines(x$a, x$b, col = y), x.l, 1:2) Best, Dimitris ---- Dimitris Rizopoulos Ph.D. Student Biostatistical Centre School of Public Health Catholic University of Leuven Address: Kapucijnenvoer 35, Leuven, Belgium Tel: +32/(0)16/336899 Fax: +32/(0)16/337015 Web: http://med.kuleuven.be/biostat/ http://www.student.kuleuven.be/~m0390867/dimitris.htm ----- Original Message ----- From: "Petr Pikal" <[EMAIL PROTECTED]> To: <r-help@stat.math.ethz.ch> Sent: Tuesday, September 26, 2006 5:40 PM Subject: [R] lapply, plot and additional arguments > Dear all > > Hopefully somebody will know the answer. > > I have some list > > x <- data.frame(a = 1:9, beta = exp(-4:4), logic = > rep(c(TRUE,FALSE), > c(5,4))) > x.l <- split(x, x$logic) > plot(x.l$a, x.l$beta) > > and I want to plot lines color coded according to logic variable > > lapply(x.l, function(x, ...) lines(x$a, x$beta, col=1:2)) > lapply(x.l, function(x,...) lines(x$a,x$beta), col=1:2) > lapply(x.l, function(x,...) lines(x$a,x$beta, ...), col=1:2) > > Well, lapply seems to ignore my best attempts to persuade it to use > different colours for each part of x.l list. > > Anybody knows how to code different colours when using lapply for > such plotting? > > At present time I use a loop but maybe lapply could do it too. > > Best regards. > Petr > > Petr Pikal > [EMAIL PROTECTED] > > ______________________________________________ > 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 > and provide commented, minimal, self-contained, reproducible code. > Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm ______________________________________________ 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 and provide commented, minimal, self-contained, reproducible code.