[R] s-plus to R

[Tony Plate]

I'd suggest just removing the "+" and see if that works.  It's somewhat 
difficult to say whether that would be safe without seeing more of your 
code, but "+" as a unary operator on character vectors seems to be an 
identity function in S-plus 6.1, e.g.:

 > print(+ letters[1:3])
[1] "a" "b" "c"
 > deparse(+ letters[1:3])
[1] "c(\"a\", \"b\", \"c\")"
 >

Maybe it has some side effects in S-plus (like invisible()?), but if the 
code depends on these you will probably have to code these in a different 
way in R anyway.  I don't know -- I haven't before seen "+" used as a unary 
operator on character vectors.

hope this helps,

Tony Plate


At Friday 04:33 PM 12/5/2003 +0000, Ognen Duzlevski wrote:
>Hi, I have a piece of code originally written for s-plus - I am trying to
>run it in R now. The code was obtained from someone who is now not
>available to give any pointers and I am a beginner in R. Here is where it
>is getting stuck:
>
> > +names(good.motifs[,1])
>Error in +names(good.motifs[, 1]) : Invalid argument to unary operator
>
>here is now names(good.motifs,1]) looks:
> > names(good.motifs[,1])
>[1] "Motif.P1.8.3"  "Motif.P1.9.14" "Motif.P1.10.1" "Motif.P1.11.8"
>[5] "Motif.P1.15.1"
>
>Can anyone help with an equivalent in R?
>
>Thanks,
>Ognen
>
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Tony Plate   tplate at acm.org