[R-sig-eco] constrained cluster analysis

[Evagelopoulos Thanasis]

Hello,

I want to do a constrained cluster analysis with R, if possible.

However, the only function that I know, i.e. the chclust function of the rioja package produces dendrograms with a y axis that is apparently not in the scale 0-1 of the distance measure used.

The "stratigraphically constrained clustering" in PAST software does produce dendrograms with y axis scaled between 0 and 1. Can this somehow be done with R?

My data are from a series of stations across an environmental gradient.

Thank you!

Athanasios Evagelopoulos