[Rd] dimnames returned by function apply

Fischer, Bernd b.fischer at dkfz-heidelberg.de
Wed Apr 29 20:22:44 CEST 2015

Dear all,

I noticed that the dimnames returned by apply are different in the new release.

In the following example. The returned row-names are c(“S”,”T”), but shouldn’t they be c(“X”,”Y”) as in the old release?



>X = array(1:8, dim=c(4,2))
>dimnames(X) = list(c("A","B","C","D"),c("S","T"))
>apply(X, 1, function(x) { c(X=x[1]*5,Y=x[2]*5) } )

   A  B  C  D
S  5 10 15 20
T 25 30 35 40

> sessionInfo()
R version 3.2.0 (2015-04-16)
Platform: x86_64-apple-darwin14.3.0 (64-bit)
Running under: OS X 10.10.3 (Yosemite)

[1] de_DE.UTF-8/de_DE.UTF-8/de_DE.UTF-8/C/de_DE.UTF-8/de_DE.UTF-8

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

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