The ade4 Package - NexTag Supports Open Source Initiatives

mstree 165
mstree
Minimal Spanning Tree
Description
Minimal Spanning Tree
Usage
mstree(xdist, ngmax = 1)
Arguments
xdist
ngmax
an object of class dist containing an observed dissimilarity
a component number (default=1). Select 1 for getting classical MST. To add n
supplementary edges k times: select k+1.
Value
returns an object of class neig
Author(s)
Daniel Chessel
Examples
data(mafragh)
maf.coa = dudi.coa(mafragh$flo, scan = FALSE)
maf.mst = mstree(dist.dudi(maf.coa), 1)
s.label(maf.coa$li, clab = 0, cpoi = 2, neig = maf.mst, cnei = 1)
xy = data.frame(x = runif(20), y = runif(20))
par(mfrow = c(2,2))
for (k in 1:4) {
neig = mstree (dist.quant(xy,1), k)
s.label(xy, xlim = c(0,1), ylim = c(0,1), addax = FALSE, neig = neig)
}