Re: [R] What are the pros and cons of the various R functions and methods for conducting least median of squares regression analysis?

Kelly, I am not going to answer your question directly as I have no experience with all those packages and others. Your question is very broad as you have not told us what your criteria and needs are. For some purposes, the package to use may be one that has been around, seems to continue to be

Re: [R] What are the pros and cons of the various R functions and methods for conducting least median of squares regression analysis?

No opinion (or expertise), but I think you may have missed the most important one, Roger Koenker's package, quantreg: https://CRAN.R-project.org/package=quantreg Cheers, Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opu