CLAN (Cluster Analysis) and GRMN (Calculate Group Means)

J. N. R. Jeffers
Submitted by: A. J. P. Gore, The Nature Conservancy,
Grange-over-Sands, Lancashire, England

CLAN performs a cluster analysis on data for which the nearest
neighbor to each individual point has been calculated. The
Algorithm groups the points into clusters which contain a pair
of mutually nearest points and all points which refer to points
already included in the groups as their nearest neighbors.

GRMN calculates the means of groups of points selected from
a larger matrix of points and variables. It is intended for the
calculation of means of multivariate data which have previously
been subjected to cluster analysis, so as to prepare the
data for the next stage of the clustering process.

Minimum Hardware:
4K PDP-8/I, DF32 Disk, High
Speed Reader
Other Programs Needed:
FORTRAN D Disk Systems
Source Language:

Catalog: July 1973