[R] C++ to R : 64bit to 32bit problem.

Hi, I'm new to calling C++/C programs from R and am having some trouble getting started. Following Sigal Blay (Simon Fraser University)'s instructions, I have a .c file called "useC1.c": /* useC1.c*/ void useC(int *i) { i[0] = 11; } This produces a .o file : "useC1.o" in a

[R] NLMINB() produces NaN!

I am having the same problem as one Rebecca Sela(see bellow). On 21/12/2007 12:07 AM, Rebecca Sela wrote: >* I am trying to optimize a likelihood function using NLMINB. After running >without a problem for quite a few iterations (enough that my intermediate >output extends further than I can s

[R] weighted-ML estimates

Hi, We are trying to calculate ML-parameter estimates of a mixed effects models where the observations are weighted. The "weights" option in lmer() with RELM=FALSE seems attractive. Does anyone know the mechanism it uses to calculate weighted ML estimates? (Is there a paper?). Also, our model i