lgcp (version 1.0)

getCounts: getCounts function...

Description

getCounts function

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.

Details

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

See Also

lgcpPredict

Examples

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}