On Thu, 28 Apr 2011, moleps wrote:
sessionInfo yields the following:
OK, the "Design" package causes the problem here. When you load the Design
package, it provides a new Surv() and related methods. This clashes with
the computations of ctree() based on Surv(). So it's better not to load
both packages simultaneously...
Z
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 <mole...@gmail.com> wrote:
Forgot to mention that the ctree command is from the party library.
//M
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===============================================
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Technician
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and provide commented, minimal, self-contained, reproducible code.
______________________________________________
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and provide commented, minimal, self-contained, reproducible code.
