search for: newbone

Displaying 2 results from an estimated 2 matches for "newbone".

2009 Apr 01
3
How to prevent inclusion of intercept in lme with interaction
...e, I feel ashamed that I cannot get this to work. Maybe it's a syntax problem, but possibly a lack of understanding. We have growth curves of new dental bone that can well be modeled by a linear growth curve, for two different treatments and several subjects as random parameter. By definition, newbone is zero at t=0, so I tried to force the curve through 0. In Pinheiro/Bates, this is done by including the -1 term, and it works well when treatment is not included (newbone~t-1), but seems to have no effect in (newone ~ t*treat-1). What's wrong? Some bracket missing? I tried a few variants. D...
2011 Dec 21
3
NEWTON ALGORITHM
Hi, My name is Curtis and I'm a 1st year student in Biochemistry at the University of Geneva. I need some help completing the code for my NEWTON ALGORITHM. It is a bonus exercice to our autumn semester maths exam and we can hand it in or not. Usually people copy and paste but I decided to sit down and review theory and ask for help left right and center. My problem is that I cannot get my