set.current.case: Set a reference prototype

In harrysouthworth/kohonen: Self-organizing Maps for Data Classification

Description

Set a reference prototype for the function plot.som with type = 'distances'. This cluster will be used as reference for the representation of its distances of all other clusters.

Usage

set.current.case( object , current.index )

Arguments

object	a som object
current.index	index of a cluster of the som object.

Value

a som object

Author(s)

David Gohel

See Also

som plot.som

Examples

library(MASS)
lcrabs <- log(crabs[, 4:8])

lcrabs.som <- som ( formula = ~ . , data = lcrabs
	, neighborhood = "uniform"
	, grid = grid ( xdim = 10 , ydim = 10 , type = "hexagonal" ) 
	, weights.min = min (lcrabs), weights.max = max (lcrabs)
	)
lcrabs.som <- learn( lcrabs.som , number.iter = 500 , max.alpha = 0.5, min.alpha = .001, max.rayon = 3 , step.eval.si = 50)

lcrabs.som <- set.current.case(lcrabs.som, 4)
plot(lcrabs.som, "distance", cex = .75, cex.label = 0.3 )

harrysouthworth/kohonen documentation built on May 17, 2019, 3:03 p.m.