Is there an R implementation anywhere for the generalizations of leverage, residual and influence measures to the multivariate regression context, e.g., as described by Barrett & Ling (1992), JASA, 87(417), 184--191 ? -Michael -- Michael Friendly Email: friendly AT yorku DOT ca Professor, Psychology Dept. York University Voice: 416 736-5115 x66249 Fax: 416 736-5814 4700 Keele Street Web: http://www.datavis.ca Toronto, ONT M3J 1P3 CANADA