getCounts: getCounts function

In lgcp: Log-Gaussian Cox Process

getCounts function

Description

This function is used to count the number of observations falling inside grid cells, the output is used in the function lgcpPredict.

Usage

getCounts(xyt, subset = rep(TRUE, xyt$n), M, N, ext)

Arguments

xyt	stppp or ppp data object
subset	Logical vector. Subset of data of interest, by default this is all data.
M	number of centroids in x-direction
N	number of cnetroids in y-direction
ext	how far to extend the grid eg (M,N) to (ext*M,ext*N)

Value

The number of observations in each grid cell returned on a grid suitable for use in the extended FFT space.

See Also

lgcpPredict

Examples

require(spatstat.explore)
xyt <- stppp(ppp(runif(100),runif(100)),t=1:100,tlim=c(1,100))
cts <- getCounts(xyt,M=64,N=64,ext=2) # gives an output grid of size 128 by 128
ctssub <- cts[1:64,1:64] # returns the cell counts in the observation
                         # window of interest

lgcp documentation built on Oct. 3, 2023, 5:08 p.m.