locator(n=512, type="n")
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.
|
locator
reads the position of the graphics cursor when
the (first) mouse button is pressed. 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.
plot.default
has been called with the same value
of type
. The plotting of the points and lines is subject to
clipping, but locations outside the current clipping rectangle will
be returned.x
and y
components which are
the coordinates of the identified points.