animation (version 2.7)

sample.cluster: Demonstration for the cluster sampling

Description

Each rectangle stands for a cluster, and the simple random sampling without replacement is performed for each cluster. All points in the clusters being sampled will be drawn out.

Usage

sample.cluster(
  pop = ceiling(10 * runif(10, 0.2, 1)),
  size = 3,
  p.col = c("blue", "red"),
  p.cex = c(1, 3),
  ...
)

Arguments

pop

a vector for the size of each cluster in the population.

size

the number of clusters to be drawn out.

p.col, p.cex

different colors / magnification rate to annotate the population and the sample

…

other arguments passed to rect to annotate the ``clusters''

Value

None (invisible NULL).

References

Examples at https://yihui.org/animation/example/sample-cluster/

See Also

sample, sample.simple, sample.ratio, sample.strat, sample.system