Library: | spatial |
See also: | SPPPinitrandom SPPPsetregion SPPPgetregion SPPPkfn SPPPpsim SPPPstrauss SPPPssi SPPPkenvl SPPPkaver |
Quantlet: | SPPPinit | |
Description: | creates a point process object and calls SPPPsetregion to set the rectangular spatial domain |
Usage: | res = SPPPinit(pp, xl, xu, yl, yu, fac) | |
Input: | ||
pp | n x 2 matrix, x and y coordinates of locations | |
xl | scalar, lower limit in x-direction of the domain rectangle | |
xu | scalar, upper limit in x-direction of the domain rectangle | |
yl | scalar, lower limit in y-direction of the domain rectangle | |
yu | scalar, upper limit in y-direction of the domain rectangle | |
fac | scalar, used to rescale all coordinates, i.e., to divide all coordinates by fac | |
Output: | ||
res | list, consisting of components pp, area and type: | |
res.pp | n x 2 matrix, input matrix pp scaled by fac | |
res.area | 4 x 1 vector, consisting of xl, xu, yl, and yu, all scaled by fac | |
res.type | string, "PP" |
; loads the spatial statistics library library("spatial") ; reads a spatial data set pines = read("pines.dat") ; initializes a point process pinesobj = SPPPinit(pines, 0, 96, 0, 100, 10) pinesobj
A point process object suitable for use in SPPPkfn: Contents of pinesobj.pp [ 1,] 0.1 9.9 [ 2,] 0.1 7.2 [ 3,] 0.2 6.2 [ 4,] 0.2 8.4 [ 5,] 0.7 4.5 ... [70,] 9.5 4.6 [71,] 9.5 6.2 Contents of pinesobj.area [1,] 0 [2,] 9.6 [3,] 0 [4,] 10 Contents of pinesobj.type [1,] "PP"