Routines to manipulate/convert data groups

Detailed Description

Files
file	grag.m
file	grag_classes.m
file	grag_classes_first.m
file	grag_classes_vote.m
file	grag_classes_votew.m
file	grag_mean.m
file	rowaggr.m
	Row aggregation blocks.
file	rowaggr_means.m
	Outputs a dataset of class means.
file	rowaggr_nmean.m
	Average every ... spectra/rows.
file	renumber_group_indexes.m
	Renumbers group indexes according to a different dataset.