R help - Apr 2006 - Problem with the cluster package

Hi everybody,

I want to use the cluster package (Cluster Analysis Extended Rousseeuw et 
al.). I downloaded it from the CRAN and installed it on my linux system 
(fedora core 4). All seemed to be allright.
But when trying to launch examples, I obtained the following message :
> library(cluster)
> data(votes.repub)
>      agn1 <- agnes(votes.repub, metric = "manhattan", stand =
TRUE)
Error in .Fortran("twins", as.integer(n), as.integer(jp), x2, dv, dis
=
double(if (keep.diss) length(dv) else 1),  :
        Fortran entry point "twins_" not in DLL for package
"cluster"

When installing the package, I saw that gfortran compiler was used. And in the 
manuel pages it is specified that gfortran has problems with entry, 
namelist,...

Is my problem related to the fortran compiler ? Shall I to use another fortran 
compiler ? If so, which one ?
Does anybody have encountered the same problem ?

Thanks in advance

-- 
~~~><((?>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tristan Rouyer
04 99 57 32 09
IFREMER - Centre de Recherche Halieutique M?diterran?en et Tropical
Avenue Jean Monnet - BP 171 - 34203 S?te cedex - France

>>>>> "Rouyer" == Rouyer Tristan <tristan.rouyer at
ifremer.fr>
>>>>>     on Mon, 24 Apr 2006 16:29:27 +0200 writes:
    Rouyer> Hi everybody, I want to use the cluster package
    Rouyer> (Cluster Analysis Extended Rousseeuw et al.). I
    Rouyer> downloaded it from the CRAN and installed it on my
    Rouyer> linux system (fedora core 4). 

Why that ???
As 'Recommended package',  it is part of R, so you already it
with your version of R [which you didn't tell us].

If possible, get R 2.3.0 (released yesterday) and you get the
latest version of 'cluster' working well.

Alternatively, in an older version of R,
use  
     update.packages()
or   install.packages("cluster")

    Rouyer> All seemed to be allright.  But when trying to
    Rouyer> launch examples, I obtained the following message :

    >> library(cluster) data(votes.repub) agn1 <-
    >> agnes(votes.repub, metric = "manhattan", stand = TRUE)
    Rouyer> Error in .Fortran("twins", as.integer(n),
    Rouyer> as.integer(jp), x2, dv, dis = double(if (keep.diss)
    Rouyer> length(dv) else 1), : Fortran entry point "twins_"
    Rouyer> not in DLL for package "cluster"

    Rouyer> When installing the package, I saw that gfortran
    Rouyer> compiler was used. And in the manuel pages it is
    Rouyer> specified that gfortran has problems with entry,
    Rouyer> namelist,...

    Rouyer> Is my problem related to the fortran compiler ?

probably.

    Rouyer> Shall I to use another fortran compiler ? If so,
    Rouyer> which one ?  Does anybody have encountered the same
    Rouyer> problem ?

These questions now belong to R-devel, not R-help, and
definitely need more details about what you have and what
exactly you did, etc.

Martin Maechler, ETH Zurich