[R] Latest revision of lme4 requires 'Matrix' >= 0.995.2 but that version is not available on CRAN

Douglas Bates dmbates at gmail.com
Mon Jan 23 15:57:16 CET 2006

On 1/22/06, John Logsdon <j.logsdon at quantex-research.com> wrote:
> I've just hit this problem as well and as I am slumming it on XP at the
> moment, I don't have the compilation tools to use the .tar.gz version.
> I also notice that the numbering format has changed.  Is this intentional?

Which numbering format?  If you mean the use of 0.995 rather than 0.99
it is because I keep finding changes that need to be made in the
underlying format for mixed-effects representations (i.e. mer objects)
before a 1.0 release.  The current sequence of numbers is 0.99 (99%),
0.995 (99 1/2%), 0.9975 (99 3/4%), 0.99875 (99 7/8%), ...

It is a pattern like, but not as inventive as, Donald Knuth's
numbering sequence for TeX releases.  It has the desirable property of
allowing for an infinite number of releases before you need to declare
the package to be at release 1.0

There will be at least a 0.9975 series of minor releases (I need to
add another two slots to the mer object).

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