Graphical parameters in metaMDS

Jari,

Sorry, in the future I will spcify the pakages where the functions are and
then I'll post the query.

Anyway, I tried your code, as you suggested:

plot(NMS.2.new, type = "n")
with(env.table, points(NMS.2.new, pch=as.numeric(Host)), pch=1.5,

col=blue)

with(env.table, legend("topleft",

leg=levels(Host),pch=seq_along(length(Host))))

But:
- the "pch" and the "col" commands do not make any dimensional change of
points on the graph (I treid using different pch values)
- the legent is print in the left top but the symbols are the same for the
two host I have in the env.table, (two open circles) instead of the open
circles and the open triangles I had into the graph.

I'll try to study better the functions you suggested me and I will post the
new code if I find a solution that works well.
Thank you very very much,