Dear all,
sorry to bother you with potentially known issue --
we have noticed that if we select data frame rows by rownames, we get
some results back if the match can be done unambiguously, though the
match is not perfect (see example), e.g. x{"2",] will return a row if
there is a unique row with name starting with "2" (but may be
"2375745"!)
is that a planned behavior of R which will be maintained? for us it
was a bit unexpected...
Yurii
-----------------------------
> a <- data.frame(x=1:3, y=1:3)
> rownames(a) <- c("2535","59617","555")
> a
x y
2535 1 1
59617 2 2
555 3 3
> a["5",]
x y
NA NA NA
> a["555",]
x y
555 3 3
> a["2",]
x y
2535 1 1
> version
_
platform i386-apple-darwin9.8.0
arch i386
os darwin9.8.0
system i386, darwin9.8.0
status Under development (unstable)
major 2
minor 11.0
year 2009
month 12
day 07
svn rev 50688
language R
version.string R version 2.11.0 Under development (unstable)
(2009-12-07 r50688)
-----------------------------------------------------------
Yurii Aulchenko
Erasmus MC Rotterdam
Department of Epidemiology, Ee 2200
Postbus 2040, 3000 CA Rotterdam
The Netherlands
phone: +31107043486
fax: +31107044657
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