| sample.cluster {animation} | R Documentation |
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.
sample.cluster(pop = ceiling(10 * runif(10, 0.2, 1)), size = 3, p.col = c("blue",
"red"), p.cex = c(1, 3), ...)
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
|
None (invisible NULL).
Yihui Xie <http://yihui.name>
http://animation.yihui.name/samp:cluster_sampling
sample, sample.simple,
sample.ratio, sample.strat,
sample.system
oopt = ani.options(nmax = ifelse(interactive(), 50, 2))
par(mar = rep(1, 4))
sample.cluster(col = c("bisque", "white"))
## HTML animation page
saveHTML({
par(mar = rep(1, 4), lwd = 2)
ani.options(nmax = ifelse(interactive(), 50, 2))
sample.cluster(col = c("bisque", "white"))
}, img.name = "sample.cluster", htmlfile = "sample.html", ani.height = 350, ani.width = 500,
title = "Demonstration of the cluster sampling", description = c("Once a cluster is sampled,",
"all its elements will be chosen."))
ani.options(oopt)