I should have also noted there is a huge efficiency gain when using lme4 over
nlme in that the Matrix package introduces faster matrix operations using
sparse matrix algorithms.
So, while it may take a moment or two longer to load this package, it saves you
*significant* time when fitting mixed linear models. So, you might view this as
a cost/benefit trade-off, not a problem.
-Harold
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of Doran, Harold
Sent: Mon 6/13/2005 5:57 AM
To: [EMAIL PROTECTED]; [email protected]
Cc:
Subject: Re: [R] slow loading with lme4
It is actually the Matrix package that is taking so long, not lme4. It
is is extremely large and is required for use with lme4. I think Doug Bates or
Duncan Murdoch can confirm Matrix() contains more than 6000 or so lines of
code. But, it is not a problem, it just is what it is.
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of ronggui
Sent: Mon 6/13/2005 12:36 AM
To: [email protected]
Cc:
Subject: [R] slow loading with lme4
it takes a long time to load the lme4 package.anyone else
encounter this problem?
> system.time(library(lme4))
载入需è¦çš„程辑包：Matrix
载入需è¦çš„程辑包：lattice
[1] 19.90 0.30 25.56 NA NA
> version
_
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status Patched
major 2
minor 1.0
year 2005
month 05
day 29
language R
OS:windows 2000
2005-06-13
------
Deparment of Sociology
Fudan University
Blog:www.sociology.yculblog.com
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