Hi: I used the function "lme" in R and Splus-7. With the same dataset and same argument for the function, I got quite different estimation results from these two software. Anyone has this experience before? zhong --------------------------------- Get your own web address. [[alternative HTML version deleted]]
-----Original Message----- From: r-help-bounces at stat.math.ethz.ch [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of yyan liu Sent: Monday, February 05, 2007 11:25 AM To: r-help at stat.math.ethz.ch Subject: [R] "lme" in R and Splus-7 Hi: I used the function "lme" in R and Splus-7. With the same dataset and same argument for the function, I got quite different estimation results from these two software. Anyone has this experience before?> Why don't you try searching the archives yourself to see?Bert Gunter Genentech Nonclinical Statistics South San Francisco, CA 94404 650-467-7374
yyan liu <zhliur <at> yahoo.com> writes:> I used the function "lme" in R and Splus-7. With the same dataset and sameargument for the function, I got> quite different estimation results from these two software. Anyone has thisexperience before?>From the FAQ:R by default uses treatment contrasts in the unordered case, whereas S uses the Helmert ones. This is a deliberate difference reflecting the opinion that treatment contrasts are more natural. Dietr