Dear all,
I would like to point to a minor bug in the documentation of merge().
The documentation (?merge) says
all logical; all = L is shorthand for all.x = L and all.y = L.
I think the correct description should be
all logical; all = T is shorthand for all.x = T and all.y = T.
The source file which needs to be fixed is
src/library/base/man/merge.Rd
To be sure that it hasn't been fixed in the meantime, I checked the
merge.Rd in R-patched_2008-07-24.tar.gz and R-devel_2008-07-24.tar.gz.
Thanks,
Roland
Little code example:
> set.seed(12345)
> df.A <- data.frame(Year=2000:2004, myvar.A=rnorm(5))
> df.B <- data.frame(Year=1998:2002, myvar.B=rnorm(5))
> merge(df.A, df.B, all=L)
Error in merge.data.frame(df.A, df.B, all = L) : object "L" not found
> merge(df.A, df.B, all=T)
Year myvar.A myvar.B
1 1998 NA -1.8179560
2 1999 NA 0.6300986
3 2000 0.5855288 -0.2761841
4 2001 0.7094660 -0.2841597
5 2002 -0.1093033 -0.9193220
6 2003 -0.4534972 NA
7 2004 0.6058875 NA
>
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