[R] Survplot, Y-axis in percent

[maziar.mohaddes]

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"
          )




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