twedl questions

twedl answers

• Extract a dataframe from a column of dataframes (tidyverse approach)
• Using dplyr mutate_at when a function takes multiple arguments which are different columns
• Understanding the maxit argument of optim() in R
• Binding together dataframes from a list in purrr
• How do you construct a flexible function input when creating a function in R?
• Specifying the `stratum` and `alluvium` parameters without attaching ggalluvial
• map + pmap, cannot find variables
• Same seed, different OS, different random numbers in R