In your data, subject is nested within sequence. Was that your intention? > a<-c(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14) > b<-c(1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2) > c<-c(2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2) > d<-c(2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1) > e<-c(1739,1633,1481,1837,1780,2073,1374,1629,1555,1385,1756,1522,1566,1643, + 1939,1615,1475,1759,1388,1483,1127,1682,1542,1247,1235,1605,1598,1718 + ) > Data<-data.frame(subject=as.factor(a), + drug=as.factor(b), period=as.factor(c), + sequence=as.factor(d), Max=e) > Data subject drug period sequence Max 1 1 1 2 2 1739 2 1 2 1 2 1633 3 2 1 1 1 1481 4 2 2 2 1 1837 5 3 1 2 2 1780 6 3 2 1 2 2073 7 4 1 1 1 1374 8 4 2 2 1 1629 9 5 1 2 2 1555 10 5 2 1 2 1385 11 6 1 1 1 1756 12 6 2 2 1 1522 13 7 1 2 2 1566 14 7 2 1 2 1643 15 8 1 1 1 1939 16 8 2 2 1 1615 17 9 1 2 2 1475 18 9 2 1 2 1759 19 10 1 1 1 1388 20 10 2 2 1 1483 21 11 1 2 2 1127 22 11 2 1 2 1682 23 12 1 1 1 1542 24 12 2 2 1 1247 25 13 1 2 2 1235 26 13 2 1 2 1605 27 14 1 1 1 1598 28 14 2 2 1 1718
Andrew On Thu, Jun 19, 2008 at 04:29:16PM +0800, leeznar wrote: > Dear R-users: > > I am a new R-user and I have a question about lm > function. Here is my data. > a<-c(1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14) > b<-c(1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2) > c<-c(2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2) > d<-c(2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1,2,2,1,1) > e<-c(1739,1633,1481,1837,1780,2073,1374,1629,1555,1385,1756,1522,1566,1643,1939,1615,1475,1759,1388,1483,1127,1682,1542,1247,1235,1605,1598,1718 > ) > Data<-data.frame(subject=as.factor(a), > drug=as.factor(b), period=as.factor(c), > sequence=as.factor(d), Max=e) > > lm3<- lm(Max ~subject*sequence + sequence + period + > drug, data=Data) > print(lm3) > anova(lm3) > > When I use lm to fit the data, there are some problems > in ??subject*sequence??. I have use GLM in SPSS to > fit the same data, and it seems there is no problem. > > I don??t know where my problem is. How can I get the > same result with SPSS? How can I do? > > Best regards, > Hsin-Ya Lee > > > > > > ______________________________________________________________________________________________________ > [[elided Yahoo spam]] > Content-Type: application/msword; name="Result_SPSS.doc" > Content-Transfer-Encoding: base64 > Content-Description: 3367377201-Result_SPSS.doc > Content-Disposition: attachment; filename="Result_SPSS.doc" > > AAAAAAAAAAAA > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -- Andrew Robinson Department of Mathematics and Statistics Tel: +61-3-8344-6410 University of Melbourne, VIC 3010 Australia Fax: +61-3-8344-4599 http://www.ms.unimelb.edu.au/~andrewpr http://blogs.mbs.edu/fishing-in-the-bay/ ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.