give.thresh: Function that returns the maximum distance of the minimum...
In spacemakeR: Spatial modelling

Description Usage Arguments Value Author(s) Examples

Can be useful to select a truncation value for the original PCNM approach. It returns the minimum value that keep all samples connected.

1	give.thresh(distxy)

distxy

A distance matrix (i.e. obtained by dist() function)

The maximum value of the minimum spanning tree

Stephane Dray

xy <- matrix(rnorm(60),30,2)
dxy <- dist(xy)
th <- give.thresh(dxy)
nb1 <- mst.nb(dxy)
wh1 <- which(as.matrix(dxy)==th,arr.ind=TRUE)
plot(nb1,xy,pch=20,cex=2,lty=3)
lines(xy[wh1[1,],1],xy[wh1[1,],2],lwd=2)
title(main="Maximum distance of the minimum spanning tree in bold")