Dear list, I also followed the MDS discussion with much interest. Nobody mentioned the MDS code in the free package R (which might be almost the same than in SPlus), cmdscale for metric and isoMDS for nonmetric MDS (library mva). It seems to work well and sufficiently fast for 400x400 data. Are there any critical comments by the experts against these implementations? Best, Christian -- *********************************************************************** Christian Hennig Seminar fuer Statistik, ETH-Zentrum (LEO), CH-8092 Zuerich (currently) and Fachbereich Mathematik-SPST/ZMS, Universitaet Hamburg [log in to unmask], http://stat.ethz.ch/~hennig/ [log in to unmask], http://www.math.uni-hamburg.de/home/hennig/ ####################################################################### ich empfehle www.boag.de