ddplyWithTotals: Extends ddply to calculate totals and subtotals.

In sachsmc/rreporttools: A small set of tools for performing common reporting tasks

Description

This function takes a data frame, subsets it according to the levels of one or more variables, and returns a data frame containing the results computed on each subset, in addition to results computed on aggregate groups. See ddply for more details. See also DTplyWithTotals.

Usage

ddplyWithTotals(.data, .variables, .fun = NULL, nestedOnly = FALSE,
  grandTotal = FALSE)

Arguments

.data	Data frame to subset.
.variables	Vector of character strings or formula denoting variables to split on.
.fun	A function that returns a data frame, to be computed on each subset.
nestedOnly	Logical. Compute subtotals only for nested groups.
grandTotal	Logical. Compute the grand total.

Examples

ddplyWithTotals(mtcars, ~cyl + gear, function(df) data.frame(mean = mean(df$wt)))

sachsmc/rreporttools documentation built on May 29, 2019, 12:55 p.m.