Display tour path with trails

A 2D tour path with trails

l_layer_trails(
  widget,
  x,
  y,
  xpre,
  ypre,
  color = "black",
  linewidth = 1,
  label = "trails",
  parent = "root",
  index = 0,
  active = TRUE,
  ...
)

Arguments

widget	`loon` widget path name as a string
x	The coordinates of x representing the current state
y	The coordinates of y representing the current state
xpre	the same length of x representing the last state
ypre	the same length of y representing the last state
color	the color of the trail
linewidth	the line width
label	label used in the layers inspector
parent	parent group layer
index	of the newly added layer in its parent group
active	a logical determining whether points appear or not (default is TRUE for all points). If a logical vector is given of length equal to the number of points, then it identifies which points appear (TRUE) and which do not (FALSE).
...	other arguments to modify l_layer_line.

Value

an l_layer widget

Examples

if(interactive()) {
p <- l_tour(iris[, -5], color = iris$Species)
l <- l_layer_trails(p, color = "grey50")
}