Hi folks, I have updated the functions of the r_toolbox.R set of utilities: https://sourceforge.net/projects/r-project-utilities/files/?source=navbar Naming was changed with some functions to reflect similar functions in SAS or SPSS, e. g. t_n_miss, t_n_valid. In addition I added functions for reporting memory usage, selecting variables by type and getting an overview over the levels of factors. I hope you find these functions useful. Please get back to me if you have suggestions or encounter any difficulties. Kind regards Georg