[R] Modified Cholesky decomposition for sparse matrices

a sparse LDL' decomposition from an existing R function, and quickly modify the output? Thanks, Michael --- Michael Braun Associate Professor of Management Science MIT Sloan School of Management 100 Main St.., E62-535 Cambridge, MA 0213

Re: [R] Lattice: problem using panel.superpose and panel.groups

as.factor(count) | dataset + model, data = all.data, panel = panel.superpose, groups=group, panel.groups = panel.ppc.plot ) plot(obj) -- Message: 119 Date: Sat, 16 Aug 2008 08:14:36 + (UTC)

[R] Lattice: problem using panel.superpose and panel.groups

ow what level of a conditioning variable is being plotted in a particular panel. Thanks in advance for any help you can provide, Michael Michael Braun Homer A. Burnell Career Development Professor and Assistant Professor of Management Science (Marketing Group) MIT Sloan School of Mana