ppregion  Set Domain for Spatial Point Pattern Analyses 
 Description
Sets the rectangular domain (xl, xu) x (yl, yu). 
Usage
ppregion(xl = 0, xu = 1, yl = 0, yu = 1)
Arguments
| xl | Either  | 
| xu | |
| yl | |
| yu | 
Value
none
Side Effects
initializes variables in the C subroutines. 
References
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.
See Also
    Copyright (©) 1999–2012 R Foundation for Statistical Computing.
Licensed under the GNU General Public License.