Animate a 2D tour path with a point trails
display_trails(center = TRUE, axes = "center", half_range = NULL,
col = "black", pch = 20, past = 3, ...)animate_trails(data, tour_path = grand_tour(), ...)
if TRUE, centers projected data to (0,0). This pins the center of data cloud and make it easier to focus on the changing shape rather than position.
position of the axes: center, bottomleft or off
half range to use when calculating limits of projected. If not set, defaults to maximum distance from origin to each row of data.
color to be plotted. Defaults to "black"
size of the point to be plotted. Defaults to 20.
draw line between current projection and projection past
steps ago
other arguments passed on to animate
and
display_xy
matrix, or data frame containing numeric columns
tour path generator, defaults to 2d grand tour