Non-Overlapping Text Labels

Optimize the location of text labels to minimize overplotting text.

Usage

label(
  x,
  y = NULL,
  labels = seq_along(x$x),
  type = c("text", "shadow", "box"),
  ...
)

x, y: A numeric vector giving the x and y coordinates of a set of points. If y is NULL, an attempt is made to interpret x in a suitable way (see grDevices::xy.coords()).
labels: A character vector or expression specifying the text to be written.
type: A character string specifying the shape of the field. It must be one of "text", "shadow" or "box". Any unambiguous substring can be given.
...: Further arguments to be passed to graphics::text(), particularly, character expansion, cex and color, col.

label() is called it for its side-effects: it results in a graphic being displayed.

This function is modeled after car::pointLabel() (originally from the maptools package).

N. Frerebeau