Re: [R] ctree and survival problem

From: moleps <moleps2_at_gmail.com>
Date: Thu, 28 Apr 2011 18:31:42 +0200

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.


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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. Received on Thu 28 Apr 2011 - 16:33:42 GMT

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