Allows the user to specify a rectangle by point-and-click in the display.
clickbox(add=TRUE, ...)A window (object of class "owin") representing the
selected rectangle.
Logical value indicating whether to create a new plot
(add=FALSE) or draw over the existing plot (add=TRUE).
Graphics arguments passed to polygon to plot the
box.
Adrian Baddeley Adrian.Baddeley@curtin.edu.au, Rolf Turner r.turner@auckland.ac.nz and Ege Rubak rubak@math.aau.dk.
This function allows the user to create a rectangular window by interactively clicking on the screen display.
The user is prompted to point the mouse at any desired locations for two corners of the rectangle, and click the left mouse button to add each point.
The return value is a window (object of class "owin")
representing the rectangle.
This function uses the R command locator to
input the mouse clicks. It only works on screen devices such as
‘X11’, ‘windows’ and ‘quartz’.
clickpoly,
clickppp,
clickdist,
locator