Split the chart into planes according to variables.
planes( g, asp, ..., type = c("rect", "list", "matrix", "circle", "tree", "mirror"), sync = TRUE )
Aspects that define split, these must be defined as a formula, e.g.: ~x+y.
Any other option.
Type of planes to use.
Whether to sync the aspects used for the planes
with others used elsewhere, similar to that of