locator {base}R Documentation

Graphical Input

Description

locator reads the position of the graphics cursor when the (first) mouse button is pressed.

Usage

locator(n=512, type="n")

Arguments

n the maximum number of points to locate.
type One of "n", "p", "l" or "o". If "p" or "o" the points are plotted; if "l" or "o" they are joined by lines.

Details

Unless the process is terminated prematurely by the user (see below) at most n positions are determined.

The input process can be terminated prematurely by pressing any mouse button other than the first.

Value

A list containing x and y components which are the coordinates of the identified points.


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