R help - Aug 2007 - mice package

Hi all,

	I am trying to run the mice package (for multiple imputation) on a  
data frame that is 5174 x 100. When I run mice(frame), I get the  
following response:
Error in solve.default(t(xobs) %*% xobs) :
	Lapack routine dgesv: system is exactly singular

and execution stops.

	I'm no expert at matrix algebra, so if someone could explain this to  
me and what I can do to get around it, I'd be very appreciative.

	Thanks.

Best,
-N.
----------
Nathan A. Paxton
Ph.D. Candidate
Dept. of Government, Harvard University

Resident Tutor
John Winthrop House, Harvard University

napaxton AT fas DOT harvard DOT edu
http://www.fas.harvard.edu/~napaxton
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