pct: Add Percentage Columns to a Dataframe

In caroline: A Collection of Database, Data Structure, Visualization, and Utility Functions for R

Add Percentage Columns to a Dataframe

Description

This function will add extra columns to an existing dataframe. The second argument 'clmn' should specify which column(s) of the dataframe the percentage should be calculated by dividing each column's row-element by it's sum. If x is not a dataframe, it will attempt to do a simple percentage operation on whatever input was passed to x

Usage

pct(x, clmns=NA, digits=2, suffix='%')

Arguments

x	A dataframe with numeric columns, or just a single numeric vector
clmns	the names of the columns for which the percentage column should be calculated from.
digits	number of decimal places for rounding
suffix	a character string specifying that the fraction should be converted to a true percentage, as a character string, with a percentage-worthy suffix

Value

The original dataframe plus extra percentage columns corresponding to original columns in the dataframe.

Examples

df <- data.frame(a=c(1,2,3), b=c('x','y','z'), c=c(5,3,2))
pct(df, c('a','c'))

pct(1:10)

caroline documentation built on July 6, 2026, 9:07 a.m.