daltoolbox (version 1.3.717)

aggregation: Aggregation by groups

Description

Aggregate data by a grouping attribute using named expressions.

Usage

aggregation(group, ...)

Value

returns an object of class aggregation

Arguments

group

grouping column name (string)

...

named expressions evaluated per group

Examples

data(iris)
agg <- aggregation(
 "Species",
 mean_sepal = mean(Sepal.Length),
 sd_sepal = sd(Sepal.Length),
 n = n()
)
iris_agg <- transform(agg, iris)
iris_agg