[R] Analysis of Dispersion

2011-05-30 Thread Joseph Kunkel
Does anyone know of an R implementation of Rao's (1965) described 'Analysis of Dispersion' which is the generalization of the General Linear Model, Y = XB, to multiple Y variables and the further use of the method to 'Test of Additional Information' in one set of Y variables corrected for a

[R] Unusual slowing of R matrix multiplication version 2.12.1 (2010-10-15) vs 2.12.0

2011-02-07 Thread Joseph Kunkel
R Version 2.12.1 (2010-10-15) vs 2.12.0 has slowed down 8 fold for dual core and 17 fold for dual-core-dual-processor Macs. I have checked this result on 3 different macs using the following R-script: Using Version 2.12.0 on a dual core dual processor Mac: