[R] ctree and survival problem

[moleps]

sessionInfo yields the following:

> sessionInfo()
R version 2.11.1 (2010-05-31) 
x86_64-apple-darwin9.8.0 

locale:
[1] en_US.UTF-8/en_US.UTF-8/C/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
 [1] stats4    tcltk     splines   grid      stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
 [1] ipred_0.8-8        class_7.3-3        mlbench_2.1-0      rpart_3.1-46       party_0.9-99991    vcd_1.2-9          colorspace_1.0-1   strucchange_1.4-3  coin_1.0-18        mvtnorm_0.9-95    
[11] modeltools_0.2-17  Design_2.3-0       car_2.0-8          nnet_7.3-1         sandwich_2.2-6     boot_1.2-43        Amelia_1.2-18      lmtest_0.9-27      zoo_1.6-4          MASS_7.3-7        
[21] mgcv_1.7-2         cem_1.0.142        randomForest_4.6-2 lattice_0.19-17    nlme_3.1-97        rgl_0.92.798       Hmisc_3.8-3        survival_2.36-2    ggplot2_0.8.9      proto_0.3-8       
[31] reshape_0.8.3      plyr_1.4           foreign_0.8-41    

loaded via a namespace (and not attached):
[1] cluster_1.13.2     digest_0.4.2       Matrix_0.999375-46 tools_2.11.1  


As i described in the original post I ran

> example(ctree) 

and the following part yields an error:


  if (require("ipred")) {
        data("GBSG2", package = "ipred")
        GBSG2ct <- ctree(Surv(time, cens) ~ .,data = GBSG2)
        plot(GBSG2ct)
        treeresponse(GBSG2ct, newdata = GBSG2[1:2,])        
    }

Error in Summary.Surv(c(1814, 2018, 712, 1807, 772, 448, 2172, 2161, 471,  : 
  Invalid operation on a survival time


//M





On 28. apr. 2011, at 14.19, Jonathan Daily wrote:

> It would help people who know more about R's guts than me if you
> posted your sessionInfo() output and exactly what commands produced
> your error.
> 
> It is also recommended that you try simply upgrading R to the latest
> version and see if you get an error with the latest version of
> 'party'. My guess is that the error will go away.
> 
> On Wed, Apr 27, 2011 at 3:40 PM, moleps <moleps2 at gmail.com> wrote:
>> Forgot to mention that the ctree command is from the party library.
>> //M
>> 
>> ______________________________________________
>> R-help at 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.
>> 
> 
> 
> 
> -- 
> ===============================================
> Jon Daily
> Technician
> ===============================================
> #!/usr/bin/env outside
> # It's great, trust me.