animation: Space-time data animation
In stpp: Space-Time Point Pattern simulation, visualisation and analysis

Provide an animation of spatio-temporal point patterns.

1 2	animation(xyt, s.region, t.region, runtime=1, incident="red", prevalent="pink3", pch=19, cex=0.5, plot.s.region=TRUE, scales=TRUE, border.frac=0.05, add=FALSE)

`xyt`	data-matrix containing the (x,y,t)-coordinates.
`s.region`	two-column matrix specifying polygonal region containing all data-locations `xyt[,1:2]`. If missing, `s.region` is the bounding box of `xyt[,1:2]`.
`t.region`	interval containing all data-times `xyt[,3]`. If missing, `t.region` is defined by the range of `xyt[,3]`.
`runtime`	approximate running time of animation, in seconds, but it is longer than expected. Can also be `NULL`.
`incident`	colour in which incident point `xyt[i,1:2]` is plotted at time `xyt[i,3]`.
`prevalent`	colour to which prevalent point `xyt[i,1:2]` fades at time `xyt[i+1,3]`.
`pch`	plotting symbol used for each point.
`cex`	magnification of plotting symbol relative to standard size.
`plot.s.region`	if `TRUE`, plot `s.region` as polygon.
`scales`	if `TRUE`, plot X and Y axes with scales.
`border.frac`	extent of border of plotting region surounding `s.region`, as fraction of ranges of X and Y.
`add`	if `TRUE`, add the animation to an existing plot.