Displaying 2 results from an estimated 2 matches for "kinhom".
2006 Aug 21
1
Creating a pixel image
I am trying to create a pixel image from the marks of a marked spatial point
pattern for use with the Kinhom function in the spatstat library and am having
some difficulty. Is there a way to create such an object using x-y
coordinates and values at those coordinates?
Many Thanks,
Michael Lawton
2006 Apr 18
2
Unfound objects in function
....ppp (data)) stop ("data must be a point process object")
i <- 0.1
diff <- 1
smo <- 1
while (diff > 0) {
olddiff <- diff
oldsmo <- smo
smo <- density.ppp (data, sigma = 2 * i, edge = edge)
lambda <- smo[data]
Ki <- Kinhom (data[,data$window], lambda = lambda, r = seq (0,
max.r, length = 100), correction = "trans")
diff <- sum (Ki$theo - Ki$trans)
i <- i + 0.1
if (i > max.r) stop ("no suitable kernel found within 0.2 to
max.r")
}
if (abs (olddiff) > abs (diff)...