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Hi, Is there a function in R that I can use to fit the data with skew t distribution? Speaking in detail, I first used the kernel density estimation to fit my data, then I drew the skew t using my specified location, scale, shape, and df to make it close to the kernel density. Now I want to get the parameter estimations of the skew t which give me the closet density to the kernel density.

Hi, I have a question about how to do case weight in mixed model using R. I read Pinhiero and Bates (2000) Mixed-Effects Models in S and S-Plus. The weight functions in there are not what I wanted. Can R do case weight, giving each observation my own weight? If so, could you give me some references and examples? I'm looking forward to hearing from you! Tianyue

Hi, I'm trying to find the corresponding Fortran77 subroutines for R function pt(). I tried some Fortran77 subroutines to compute the t distribution function. But none of them are as good as R function pt(). Does anyone can give me some information about it? Thank you very much! Tianyue