28.24 Animation: Basic Example

REVIEW

We can generate multiple plots and they then form an animation. For this to work, we use the knitr (Xie 2025) option fig.show="animate". For the LaTeX processing we then need to attach the animate package:

\usepackage{animate}

To view the animation live we need to use Acrobat Reader to view the PDF file.

This example comes from http://taiyun.github.io/blog/2012/07/k-means/.

library(animation)
par(mar=c(3, 3, 1, 1.5), mgp=c(1.5, 0.5, 0), bg="white")
cent <- 1.5 * c(1, 1, -1, -1, 1, -1, 1, -1)
x <- NULL
for (i in 1:8) x <- c(x, rnorm(25, mean=cent[i]))
x <- matrix(x, ncol=2)
colnames(x) <- c("X1", "X2")
kmeans.ani(x, centers=4, pch=1:4, col=1:4)

References

———. 2025. Knitr: A General-Purpose Package for Dynamic Report Generation in r. https://yihui.org/knitr/.

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