Hi Bart, Even after putting the variables in the apply function, the results come not right:
library (alphahull) DT=data.frame(x=c(0.25,0.25,0.75,0.75),y=c(0.25,0.75,0.75,0.25)) Hull <- ahull(DT, alpha = 0.5) TEST<- data.frame(x=c(0.25,0.5),y=c(0.5,0.5)) plot(Hull) points(TEST) InHul2D <- function(Val1, Val2, Hull) inahull(Hull, p = c(Val1, Val2)) IN <- apply(TEST, 1, function(x,y) InHul2D("x","y",Hull)) [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.