[R] converting numeric to ordered

[Duncan Mackay]

Hello all,
would someone please tell me why the following code doesn't "work" (i.e. do
what i expected!).
I wanted to convert numeric variables in a matrix to ordered (for input as
nominal variables into the 'daisy' program).
Why does the following code seem to work, but the "is.ordered" command
reports that the variables are not ordered (factors)??


> xxx <- matrix(c(0,1,0,1,0,1,0,1,0),ncol=3)
> xxx
     [,1] [,2] [,3]
[1,]    0    1    0
[2,]    1    0    1
[3,]    0    1    0
> yyy <- apply(xxx,2,as.ordered)
> yyy
     [,1] [,2] [,3]
[1,]    1    2    1
[2,]    2    1    2
[3,]    1    2    1
> apply(yyy,2,is.ordered)
[1] FALSE FALSE FALSE

Duncan

*******************************************
Dr. Duncan Mackay
Biology
Flinders University
GPO Box 2100
Adelaide
S.A.    5001
AUSTRALIA

Ph (08) 8201 2627    FAX (08) 8201 3015

http://www.bio.flinders.edu.au/dam/damres.htm


-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._