summary.clara: Summary Method for 'clara' Objects

In cluster: "Finding Groups in Data": Cluster Analysis Extended Rousseeuw et al.

Summary Method for 'clara' Objects

Description

Returns (and prints) a summary list for a clara object. Printing gives more output than the corresponding print.clara method.

Usage

## S3 method for class 'clara'
summary(object, ...)
## S3 method for class 'summary.clara'
print(x, ...)

Arguments

x, object	a clara object.
...	potential further arguments (require by generic).

See Also

clara.object

Examples

## generate 2000 objects, divided into 5 clusters.
set.seed(47)
x <- rbind(cbind(rnorm(400, 0,4), rnorm(400, 0,4)),
           cbind(rnorm(400,10,8), rnorm(400,40,6)),
           cbind(rnorm(400,30,4), rnorm(400, 0,4)),
           cbind(rnorm(400,40,4), rnorm(400,20,2)),
           cbind(rnorm(400,50,4), rnorm(400,50,4))
)
clx5 <- clara(x, 5)
## Mis'classification' table:


table(rep(1:5, rep(400,5)), clx5$clust) # -> 1 "error"
summary(clx5)

## Graphically:
par(mfrow = c(3,1), mgp = c(1.5, 0.6, 0), mar = par("mar") - c(0,0,2,0))

plot(x, col = rep(2:6, rep(400,5)))
plot(clx5)

cluster documentation built on Nov. 28, 2023, 1:07 a.m.