Get variables that need to be averaged from formula.

Pulls out variables not being used for grouping that will be averaged, checks that they are numeric, and returns them.

Usage

get_formula_avg_cols(df, formula_vars, average_cols)

Arguments

df

Data frame of model data.

formula_vars

Variables included in the model formula, generated by all.vars(formula).

average_cols

Column name(s) of column(s) for use in grouping data for averaging, such as regions. If missing, uses global average of the data for infilling.