PRINCIPAL_COMPONENTS -- clustering

MATRIX_FILE = $\langle{\tt string:1}\rangle$	'family.mat'	the filename of the pairwise distance matrix
FILE = $\langle{\tt string:1}\rangle$	'default'	output file

Description:

This command calculates principal components clustering for the input matrix of pairwise distances. This matrix must be in the PHYLIP format and can be produced by the ID_TABLE, SEQUENCE_COMPARISON, or COMPARE commands.

The projected coordinates $p$ and $q$ are written to file FILE. The output file can be used with ASGL to produce a principal components plot.

This command is useful for deciding about which known 3D structures are to be used as templates for comparative modeling.

Example: See ID_TABLE command.