You could try something like: plot(foo[1],conf.int=TRUE) par(new=TRUE) plot(foo[2],conf.int=TRUE,col=2)
Seems to work! David ----- Original Message ----- From: "Ko-Kang Kevin Wang" <[EMAIL PROTECTED]> To: "R Help" <[EMAIL PROTECTED]> Sent: Wednesday, March 26, 2003 12:13 PM Subject: [R] Plotting K-M Curve when have several strata > Hi, > > If I have: > foo <- survfit(y ~ x) > where y is a survival object and x is a n-level factor. The documentation > says when I plot(foo), the confidence intervals will not be plotted (which > I guess is understandable as otherwise the plot will get really messy). > > I tried to plot with confidence intervals by using: > plot(foo, conf.int = TRUE) > and indeed the resulting plot is messy. However I'm just wondering if I > can (suppose x is a 2-level factor) use different colours and line types > for the confidence lines? If I do: > plot(foo, conf.int = TRUE, col = 1:2) > then I'll get two different colours. What I would like is to then plot > the confidence lines using lty = 2 (while keeping the colour). > > Can I do this? > > -- > Cheers, > > Kevin > > -------------------------------------------------------------------------- ---- > /* Time is the greatest teacher, unfortunately it kills its students */ > > -- > Ko-Kang Kevin Wang > Master of Science (MSc) Student > SLC Tutor and Lab Demonstrator > Department of Statistics > University of Auckland > New Zealand > Homepage: http://www.stat.auckland.ac.nz/~kwan022 > Ph: 373-7599 > x88475 (City) > x88480 (Tamaki) > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
