Hi!
If I use format() on numeric vector, na.encode argument does not have any e=
ffect. This
was reported before:
- https://stat.ethz.ch/pipermail/r-help/2007-October/143881.html
- http://tolstoy.newcastle.edu.au/R/e2/devel/06/09/0360.html
It works for other (say character) classes!
> format(c("a", NA), na.encode=3DTRUE)
[1] "a " "NA"
> format(c("a", NA), na.encode=3DFALSE)
[1] "a" NA
I explored this a bit and found out that format.default() uses prettyNum(.I=
nternal(format(...)))
for formatting the logical, numeric, complex, ... classes. Simple tests (se=
e bellow) show that
.Internal(format()) does not obey the na.encode argument.
## Encode NA as "NA"
> .Internal(format(x=3Dc(1, NA), trim=3DFALSE, digits=3DNULL, nsmall=3D0, w=
idth=3DNULL, adj=3D1, na.encode=3DTRUE, scientific=3DNA))
[1] " 1" "NA"
## Do not encode NA as "NA"
> .Internal(format(x=3Dc(1, NA), trim=3DFALSE, digits=3DNULL, nsmall=3D0, w=
idth=3DNULL, adj=3D1, na.encode=3DFALSE, scientific=3DNA))
[1] " 1" "NA"
## --> no effect
## Does prettyNum encode NA as "NA"
> prettyNum(c("1", NA))
[1] "1" NA
## --> not for character
> prettyNum(c(1, NA))
[1] "1" "NA"
## --> but it does for numeric
I did all my tests with my Ubuntu box running R
> version
_
platform i486-pc-linux-gnu
arch i486
os linux-gnu
system i486, linux-gnu
status
major 2
minor 7.1
year 2008
month 06
day 23
svn rev 45970
language R
version.string R version 2.7.1 (2008-06-23)
--
Lep pozdrav / With regards,
Gregor Gorjanc
----------------------------------------------------------------------
University of Ljubljana PhD student
Biotechnical Faculty www: http://gregor.gorjanc.googlepages.com
Zootechnical Department blog: http://ggorjan.blogspot.com
Groblje 3 mail: gregor.gorjanc <at> bfro.uni-lj.si
SI-1230 Domzale fax: +386 (0)1 72 17 888
Slovenia, Europe tel: +386 (0)1 72 17 861
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