Message-ID: <6FBE93B66C50154D9F1E55B674AFCC9D0104A607@s31xe7.systems.smu.edu>
Date: 2008-09-04T20:31:00Z
From: Roberts, Kyle
Subject: lme with ECLS
In-Reply-To: <40e66e0b0809041117s5c88aaf2o5c3084c1ed5e1e02@mail.gmail.com>
Friends,
I am running the ECLS dataset with lme (long story on why I couldn't use lmer; mostly political) and am having trouble. Here's the model:
m.null<-lme(MATH~TIME, random=~TIME|CHILDID, ecls, na.action=na.omit, weights=varFixed(~C1_6SC0))
When I ran the model without the weighting variable, it converged in about a minute (~17000 kids on 4 measurement occasions). But with the weights the thing has been running for about 24 hours without coming to a solution.
Any ideas????
R 2.7.1
HP workstation with 4G RAM, Windows XP
Thanks,
Kyle
*********************************************************
Dr. J. Kyle Roberts
Department of Literacy, Language, and Learning
School of Education and Human Development
Southern Methodist University
P.O. Box 750381
Dallas, TX? 75275
214-768-4494
http://www.hlm-online.com/