How about: plot(fit, mark.time=TRUE, xscale=365.24,xlab='Years', ylab='Survival',lwd=c(2,1))
Rob ----- Original Message ----- From: "Rachel Pearce" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, September 19, 2005 4:59 AM Subject: [R] Problem with tick marks in lines.survfit (package survival) > I have attempted to follow posting guidelines but I have failed to find out > what I am doing wrong here. > I am trying to use lines.survfit to plot a second curve onto a survival > curve produced by plot.survfit. In my case this is to be a progression free > survival curve superimposed upon an overall survival curve, but I will > illustrate my problem using the example given in the help for lines.survfit. > I would like to have tick marks for censored data points on both curves, so > I would like to do something like: > > fit <- survfit(Surv(time, status) ~ sex, pbc,subset=1:312) > > plot(fit[2], mark.time=TRUE, xscale=365.24, > + xlab='Years', ylab='Survival') > > lines(fit[1], lwd=2, xscale=365.24, mark.time=TRUE) > but when I do this, no tick marks appear on the second curve. Can anyone > see what I am doing wrong here? > Rachel > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
