Vignette on using Julia MixedModels from R
Many users experience long execution times and convergence warnings when trying to fit complex linear mixed-effects models with lmer. I have, in the past, shown that such models can be fit using the MixedModels ( https://github.com/dmbates/MixedModels.jl) package for Julia ( https://julialang.org) and that the data can be pulled from an R representation using either the RCall ( https://github.com/JuliaInterop/RCall.jl) or RData ( https://github.com/JuliaData/RData.jl). Recently the JuliaCall package for R ( https://github.com/Non-Contradiction/JuliaCall) has become available on CRAN. I have a short note at http://rpubs.com/dmbates/377897 on how to use that package to fit models using MixedModels from R.