collapse_df_by_group: Collapse rows by grouping columns

In healthiar: Quantifying and Monetizing Health Impacts Attributable to Exposure

Collapse rows by grouping columns

Description

This function aggregates a data frame into one row per group, pasting the values of the columns that have different values within a group and (optionally) summing the columns specified in sum_col_names

Usage

collapse_df_by_group(
  df,
  group_col_names,
  sum_col_names = NULL,
  multi_value_col_names = NULL
)

Arguments

df	Data frame or tibble containing the data
group_col_names	String vector containing the column names in df that serve as grouping columns.
sum_col_names	String vector containing the column names in df that have to be summed within each group (e.g. impacts). Optional.
multi_value_col_names	String vector containing the columns names in df that do not have a unique value (but different values).

Value

This function returns a data frame or tibble with one row per group, keeping the columns and the column order of df

Author(s)

Alberto Castro & Axel Luyten

healthiar documentation built on Oct. 12, 2026, 5:07 p.m.