XploRe Help : SPPPinitrandom

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Library:	spatial
See also:	SPPPinit SPPPsetregion SPPPgetregion SPPPkfn SPPPpsim SPPPstrauss SPPPssi SPPPkenvl SPPPkaver

Quantlet:		SPPPinitrandom
Description:		Resets the random number generator for point processes.

Reference(s):

Venables, W. N., Ripley, B. D. (1999): Modern Applied Statistics with S-Plus, Third Edition, Springer, New York

Link:

Spatial statistics tutorial

Usage:	`SPPPinitrandom (rstart)`
Input:
	`rstart`	scalar - root for random number generator

Note:

C-Code from Venables, Ripley (1999) forms the basis of this quantlet. Also check this reference for more details.

Example:

; load the spatial statistics library library ("spatial") ; read a spatial data set pines = read ("pines.dat") ; initialize a point process pinesobj = SPPPinit (pines, 0, 96, 0, 100, 10) ; reset random number generator SPPPinitrandom (0) ; create random point processes sppsim = SPPPpsim (100, 72)

Result:


The root for the random number generator for point 

processes is set to rstart - thus allowing to repeat

a particular sequence of random numbers.

Library:	spatial
See also:	SPPPinit SPPPsetregion SPPPgetregion SPPPkfn SPPPpsim SPPPstrauss SPPPssi SPPPkenvl SPPPkaver

Keywords - Function groups - @ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Author: Juergen Symanzik, 000725