animation: sample.system – R documentation

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sample.system

Demonstration for the systematic sampling

Description

The whole sample frame is denoted by a matrix (nrow * ncol) in the plane, and the sample points with equal intervals are drawn out according to a random starting point. The points being sampled are marked by red circles.

Usage

sample.system(nrow = 10, ncol = 10, size = 15, p.col = c("blue", "red"), p.cex = c(1, 
    3))

Arguments

`nrow`	the desired number of rows of the sample frame.
`ncol`	the desired number of columns of the sample frame.
`size`	the sample size.
`p.col, p.cex`	different colors / magnification rate to annotate the population and the sample

Value

None (invisible NULL).

Author(s)

Yihui Xie

References

Examples at https://yihui.name/animation/example/sample-system/