How to make an Animated Circular Graph in R

Pontifications

• colours360 is a data frame with hex colours e.g. #f72738
• axes = F means don’t draw any X or Y axis tick marks; this combined with setting main, xlab, ylab to "" results in a void theme i.e. a blank graph with just the graphics!
• lwd = 30 means line width of 30 units
• draw.radial.line documentation
• full details: https://github.com/rtanglao/rt-animated-gifs Scroll down to November 13, 2016

Code

library(plotrix)

plot(0, xlim=c(1,5), ylim=c(1,5), main="", xlab="",
  ylab="", type="n", axes=F)
index = 0
for (row in 1:nrow(colours360)) {
  draw.radial.line(0,2,deg= index, center=c(3,3), 
    col= colours360[row,], expand = FALSE, lwd = 30)
  Sys.sleep(0.25) #sleep for 1/4 of a second
  index = index + 1
}

Twitter compatible animated GIF output

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