| Locator {RandomFields} | R Documentation |
Reads the position of the graphics cursor when the (first) mouse button is pressed, or replays from storage.
Locator(n, type="n", info=NULL, ...)
n |
the maximum number of points to locate; the value of n
is ignored if |
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. |
info |
arbitrary object; tracing information that is useful
in case the user likes to edit the stored sequence of inputs;
the value of info is considered only if useraction
has been called by action="start.register"
or action="continue.register"
|
... |
additional graphics parameters |
The behaviour of Locator depends on the
the value of action set by useraction,
see there for more information.
See also locator for further information on
the parameters.
A list containing 'x' and 'y' components which are the coordinates of the identified points in the user coordinate system, i.e., the one specified by 'par("usr")'.
Martin Schlather, martin.schlather@math.uni-goettingen.de http://www.stochastik.math.uni-goettingen.de/institute
getactions,
Readline,
useraction,
userinput
## see useraction