You want to animate a three-dimensional plot by moving the viewpoint around the plot.
Rotating a 3D plot can provide a more complete view of the data. To animate a 3D plot, use
library(rgl) plot3d(mtcars$wt, mtcars$disp, mtcars$mpg, type = "s", size = 0.75, lit = FALSE) play3d(spin3d())
By default, the graph will be rotated on the z (vertical) axis, until you send a break command to R.
You can change the rotation axis, rotation speed, and duration:
# Spin on x-axis, at 4 rpm, for 20 seconds play3d(spin3d(axis = c(1,0,0), rpm = 4), duration = 20)
To save the movie, use the
movie3d() function in the same way as
play3d(). It will generate a series of .png files, one for each frame, and then attempt to combine them into a single animated .gif file using the convert program from the ImageMagick image utility.
This will spin the plot once in 15 seconds, at 50 frames per second:
# Spin on z axis, at 4 rpm, for 15 seconds movie3d(spin3d(axis = c(0,0,1), rpm = 4), duration = 15, fps = 50)
The output file will be saved in a temporary directory, and the name will be printed on the R console.
If you don’t want to use ImageMagick to convert the output to a .gif, you can specify
convert=FALSE and then convert the series of .png files to a movie using some other utility.