Demonstration for the cluster sampling
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
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.