[R] How to set the floating point precision beyond e-22?
Peter Dalgaard
p.dalgaard at biostat.ku.dk
Fri Aug 5 13:47:25 CEST 2005
Duncan Murdoch <murdoch at stats.uwo.ca> writes:
>
> You will have to find a different solution to the problem. To machine
> precision, that matrix looks singular. This usually indicates that it's
> not the right matrix to try to invert.
It might be a scaling issue though: If you're measuring age in days
and hormone concentrations in Molar, then you'll get that sort of
eigenvalue ratios in a fairly benign way.
--
O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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