On Dec 19, 2008, at 2:04 PM, Heinz Tuechler wrote:
> Dear All,
>
> trying to write a data.frame, containing Surv objects to a csv-file
> I get
> "Error in dimnames(X) <- list(dn[[1L]], unlist(collabs, use.names =
> FALSE)) :
> length of 'dimnames' [2] not equal to array extent".
>
> See example below.
>
> May be, I overlooked something, but I expected that also data.frames
> containing Surv objects may be written to csv files.
>
> Is there a better way to write to csv files?
Yes, if the goal is creating an ASCII structure that can be recovered
by an R interpreter:
?dput
?dget
> dput(df.soac, "test")
> copy.df.soac <- dget("test")
> all.equal(df.soac, copy.df.soac)
Doesn't give you a result that you would want to read with Excel,
but that does not appear to be your goal. You can examine it with a
text editor.
--
David Winsemius
>
>
> Thanks,
>
> Heinz T?chler
>
>
>
> ### write Surv-object in csv-file
> library(survival)
> ## create example data
> soa <- Surv(1:5, c(0, 0, 1, 0, 1))
> df.soa <- data.frame(soa)
> write.csv(df.soa, 'df.soa.csv') ## works as I expected
> read.csv('df.soa.csv') ## works as I expected
>
> df.soa2 <- data.frame(soa, soa2=soa)
> write.csv(df.soa2, 'df.soa2.csv') ## works as I expected
> read.csv('df.soa2.csv') ## works as I expected
>
> char1 <- letters[1:5]
> df.soac <- data.frame(soa, char1)
> write.csv(df.soac, 'df.soac.csv') ## generates the following error
> message:
>
> Error in dimnames(X) <- list(dn[[1L]], unlist(collabs, use.names =
> FALSE)) :
> length of 'dimnames' [2] not equal to array extent
>
> df.csoa <- data.frame(char1, soa)
> write.csv(df.csoa, 'df.soac.csv') ## generates the following error
> message:
>
> Error in dimnames(X) <- list(dn[[1L]], unlist(collabs, use.names =
> FALSE)) :
> length of 'dimnames' [2] not equal to array extent
>
>
> platform i386-pc-mingw32
> arch i386
> os mingw32
> system i386, mingw32
> status Patched
> major 2
> minor 8.0
> year 2008
> month 11
> day 10
> svn rev 46884
> language R
> version.string R version 2.8.0 Patched (2008-11-10 r46884)
> > sessionInfo()
> R version 2.8.0 Patched (2008-11-10 r46884)
> i386-pc-mingw32
>
> locale:
> LC_COLLATE=German_Austria.1252;LC_CTYPE=German_Austria.
> 1252;LC_MONETARY=German_Austria.
> 1252;LC_NUMERIC=C;LC_TIME=German_Austria.1252
>
> attached base packages:
> [1] splines stats graphics grDevices utils datasets
> methods
> [8] base
>
> other attached packages:
> [1] survival_2.34-1
>
> ______________________________________________
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