It doesn't look like 'survplot' allows you to control the yaxis formatting in that way. You can edit the function survplot.survfit directly if you really need to: fix(survplot.survfit). The relevant line to change is (I believe) mgp.axis(2, at = pretty(ylim)) to mgp.axis(2, at = pretty(ylim), labels= 100*pretty(ylim)). However, if you are new to R this could cause you more trouble than you want.
Alternatively, you can use 'plot' with the yaxt="n" option. e.g., mod <- survfit(Surv(time,status)~ph.ecog, data=lung) plot(mod, yaxt="n", col=1:4, ylab="Survival Percent", xlab="Days", main="Lung Cancer Data\nEffect of ph.ecog on Survival") axis(2, at=seq(0,1,0.2), labels=paste(seq(0,100,20), "%", sep=""), las=1) But that doesn't have all the other stuff you appear to want (e.g., shaded confidence bands). Good luck, Chris -----Original Message----- From: maziar.mohaddes [mailto:maziar.mohad...@gmail.com] Sent: Tuesday, November 06, 2012 11:11 AM To: r-help@r-project.org Subject: [R] Survplot, Y-axis in percent Hi I am a new fan of R after getting mad with the graphical functional in SPSS. I have been able to create a nice looking Kaplan Meyer graph using Survplot function. However I have difficulties in turning the y axis to percent instead of the default 0-1 scale. Further I have tried the function yaxt="n" without any results. Any help in this matter will be appreciated. The code is posted below: par(mfrow=c(1,1)) fit <- survfit(Surv(revreg$Tcuprev , revreg$Rcup_n_j_n)~revreg$RAceGrp_1Maz) fit survplot (fit, col=c("gray1","gray40"), lty=1, lwd = 1, col.fill=c("gray50","gray80"), mark.time= T, conf="bands" , conf.int=.95, add=F , xlim=c(0, 20) , time.inc = 4, ylim=c(0.5, 1), xlab="Years Postoperative" , ylab="Cumulative Survival Probability" , label.curves=F , abbrev.label=F , yaxt="n" ) -- View this message in context: http://r.789695.n4.nabble.com/Survplot-Y-axis-in-percent-tp4648572.html Sent from the R help mailing list archive at Nabble.com. ********************************************************** Electronic Mail is not secure, may not be read every day, and should not be used for urgent or sensitive issues ______________________________________________ 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.
