This is an R package providing functions to compute standardaized regression coefficients - called betas - for different kind of linear models.
The use is as simple as
betas.lm(fit) # fit is a linear model
or
betas.lmr(fit.robust) # fit.robust is a robust linear model
Installing from CRAN (http://cran.r-project.org/web/packages/betas/)
install.packages("betas")
library(betas)
or installing from GitHub
library(devtools)
install_github("andreaphsz/betas")
library(betas)
The package includes a subset of the PISA 2012 students data set.