This function takes a time-invariant variable and repeats it for each period in a panel data set.
time_invariant_to_panel(x, df, idname, balanced_panel = TRUE)
a vector of length equal to the number of rows in df.
a vector of length equal to the number of unique ids in df.
the data.frame used in the function
name of column that holds the unit id
a logical indicating whether the panel is balanced. If TRUE, the function will optimize the repetition process. Default is TRUE.