search for: _compute_

Dear List: Is any one aware of a package that would extend the D() function and allow for one to maximize a likelihood function symbolically? Something akin to Solve[x==0, parameter] function in Mathematica? Clearly R has the capacity to _compute_ MLEs given a set of data. But, I'm looking for a package that would allow for me to define the likelihood function, find the 1st order partial derivative of this function (which can already be handled in D()), and then symbolically maximize this function? -Harold [[alternative HTML v...

Hi all I have a R code that incorporates a C++ programm. I compiled the C++ code with the following: R CMD SHLIB Model.cpp -Wall funzioni.cpp it seems to work fine but when i run the R code i get this error message Error in dyn.load(paste(dir_func, "Model.so", sep = "")) : unable to load shared object '/lustre/work/uuu/RCpp/Model.so': libR.so: cannot open