Nothing
cl_prototypes <-
function(x)
UseMethod("cl_prototypes")
## No default method.
## Package stats: kmeans() (R 2.1.0 or better).
cl_prototypes.kmeans <-
function(x)
x$centers
## Package cluster: clara() always gives prototypes.
cl_prototypes.clara <-
function(x)
x$medoids
## Package cluster: fanny() never gives prototypes.
## Package cluster: pam() does not give prototypes if given a
## dissimilarity matrix.
cl_prototypes.pam <-
function(x)
{
p <- x$medoids
if(!is.matrix(p))
stop("Cannot determine prototypes.")
p
}
## Package cba: ccfkms().
cl_prototypes.ccfkms <- cl_prototypes.kmeans
## Package cclust: cclust().
cl_prototypes.cclust <- cl_prototypes.kmeans
## Package e1071: cmeans() gives objects of class "fclust".
cl_prototypes.fclust <- cl_prototypes.kmeans
## Package e1071: cshell().
cl_prototypes.cshell <- cl_prototypes.kmeans
## Package e1071: bclust().
cl_prototypes.bclust <- cl_prototypes.kmeans
## Package flexclust: kcca() returns objects of S4 class "kcca" which
## extends S4 class "flexclust".
cl_prototypes.kcca <-
function(x)
methods::slot(x, "centers")
## Package kernlab: specc() and kkmeans() return objects of S4 class
## "specc".
cl_prototypes.specc <-
function(x)
kernlab::centers(x)
## Package mclust: Mclust().
cl_prototypes.Mclust <-
function(x)
{
p <- x$mu
## For multidimensional models, we get a matrix whose columns are
## the means of each group in the best model, and hence needs to be
## transposed.
if(is.matrix(p))
p <- t(p)
p
}
## Package clue: cl_pam().
cl_prototypes.cl_pam <-
function(x)
x$prototypes
## Package clue: (virtual) class "cl_partition".
cl_prototypes.cl_partition <-
function(x)
cl_prototypes(.get_representation(x))
## Package clue: pclust().
cl_prototypes.pclust <-
function(x)
x$prototypes
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