It is one of the methods available in SPSS.
just specify
    /method = ward
on the CLUSTER procedure.

Art
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shannon wrote:

>Hi
>
>Is code available to implement Ward's method in S-Plus?
>
>Thanks
>Bill
>---
>
>William D. Shannon, Ph.D.
>
>Assistant Professor of Biostatistics in Medicine
>Division of General Medical Sciences and Biostatistics
>
>Washington University School of Medicine
>Campus Box 8005, 660 S. Euclid
>St. Louis, MO   63110
>
>Phone: 314-454-8356
>Fax: 314-454-5113
>e-mail: [log in to unmask]
>web page: http://ilya.wustl.edu/~shannon
>
>
>