Working on a Quality Threshold clustering algorithm for the BEMC, and having difficulty getting the computer to recognize and set aside (as already used) the towers belonging to a given cluster. Started using a multi-array data organization system to this end, with one array for the Eta, Phi, Pt, and "Pt assigned to this tower" data, one for the charge and used/not used data, and one to keep track of which towers are assigned to which in the individual clusters.