Re: [Rd] About AHP (Analytic Hierachy process)
To my knowledge there is not such a thing in R, but at http://www.superdecisions.com there is a free multiplatform software implemented by Saaty that does AHP/ANP models. Regards, Simone On 3/17/06, Omrani Hichem <[EMAIL PROTECTED]> wrote: > Dear Sir, > > I wander if, it existes in R,a library or a routine for AHP (Analytic > Hiararchy > Process). AHP is a kind of Multi criteria Analysis approach. > > Thanks, for help. > > __ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > -- __ Simone Giannerini Dipartimento di Scienze Statistiche "Paolo Fortunati" Universita' di Bologna Via delle belle arti 41 - 40126 Bologna, ITALY Tel: +39 051 2098248 Fax: +39 051 232153 E-mail: [EMAIL PROTECTED] __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
[Rd] Package dependencies when submitting to CRAN: policies?
What is the policy for submitting packages that depend on external non-R code? We'd like to add Rggobi2 to CRAN, but since the CRAN machine won't have GGobi, I wanted to check what the policy/procedures are. Regards, Hadley __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
Re: [Rd] [R] Collapsing levels of a factor
>> x <- factor(1:3, labels = c("b" , "f", "minus"))
>> x
> [1] b f minus
> Levels: b f minus
>
> I want to change all "minus" to "b". I know that the simplest way to do this
> is
>
>> levels(x) <- c("b", "f", "b")
>
> and also that
>
>> x[x == "minus"] <- "b"
>> x <- factor(x)
>
> works. But why not
>
>> x <- ifelse(x == "minus", "b", x)
>> x <- factor(x)
> x
> [1] 1 2 b
> Levels: 1 2 b
>
I find particulary usefull the list approach. Here is the example from
levels help page. I like this approach, since you can modify list and
apply it to a factor via levels.
## we can add levels this way:
f <- factor(c("a","b"))
levels(f) <- c("c", "a", "b")
f
f <- factor(c("a","b"))
levels(f) <- list(C="C", A="a", B="b")
f
I was playing around this last week and wrote a simple function[1],
which can save you some work in getting such a list from a factor. Is R
core interested in it?
[1]http://www.bfro.uni-lj.si/MR/ggorjan/software/R/ggmisc/factorMap.R
--
Lep pozdrav / With regards,
Gregor Gorjanc
--
University of Ljubljana PhD student
Biotechnical Faculty
Zootechnical Department URI: http://www.bfro.uni-lj.si/MR/ggorjan
Groblje 3 mail: gregor.gorjanc bfro.uni-lj.si
SI-1230 Domzale tel: +386 (0)1 72 17 861
Slovenia, Europefax: +386 (0)1 72 17 888
--
"One must learn by doing the thing; for though you think you know it,
you have no certainty until you try." Sophocles ~ 450 B.C.
__
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Re: [Rd] Package dependencies when submitting to CRAN: policies?
hadley wickham wrote: > What is the policy for submitting packages that depend on external > non-R code? We'd like to add Rggobi2 to CRAN, but since the CRAN > machine won't have GGobi, I wanted to check what the policy/procedures > are. I think it is worth to discuss this topic with the CRAN maintainers (hence Kurt Hornik, in particular). I will come back to this in a separate thread off-list. Uwe Ligges > Regards, > > Hadley __ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
