[R] simple save question

[Tom La Bone]

No cigar. This is what I get and my session info. Any suggestions?
> 
> library(survival)
> library(ISwR)
> dat.s <- Surv(melanom$days,melanom$status==1)
> fit <- survfit(dat.s~1)
> print(fit, print.rmean=TRUE)
Call: survfit(formula = dat.s ~ 1)

   records      n.max    n.start     events     *rmean *se(rmean)     median 
       205        205        205         57       4125        161         NA 
   0.95LCL    0.95UCL 
        NA         NA 
    * restricted mean with upper limit =  5565 
> sfit <- summary(fit) 
> sfit$table[5] 
median 
    NA 



> sessionInfo()
R version 2.13.1 (2011-07-08)
Platform: i386-pc-mingw32/i386 (32-bit)

locale:
[1] LC_COLLATE=English_United States.1252 
[2] LC_CTYPE=English_United States.1252   
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C                          
[5] LC_TIME=English_United States.1252    

attached base packages:
[1] splines   stats     graphics  grDevices utils     datasets  methods  
[8] base     

other attached packages:
[1] ISwR_2.0-5      survival_2.36-9 rj_0.5.5-4     

loaded via a namespace (and not attached):
[1] tools_2.13.1




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