same as argument type in function locator. see ?locator. Default draws lines
col
colour of lines/points
...
other arguments to pass to locate
Value
a polygonal owin object
Details
Converts a polygon selected via the mouse in a graphics window into an polygonal owin object. (Make sure the x and y scales are correct!)
Points must be selected traversing the required window in one direction (ie either clockwise, or anticlockwise), points must not be overlapping.
Select the sequence of edges via left mouse button clicks and store the polygon with a right click.