Apply metrics to groups.

Transforme a list of metrics to apply them to groups, typically to populations.

Usage

IndexByGroups(metrics, groups)

Arguments

metrics

A vector of metrics like the argument "index" of function ComIndex

groups

Name of the factor to apply the metrics to groups in the form "pop", e.g. population

Value

A vector of transformed metrics

Author

Adrien Taudiere

Examples

IndexByGroups(c("mean(x)", "sd(x)"), "pop")
#> [1] "tapply(x, pop, function(x) mean(x))" "tapply(x, pop, function(x) sd(x))"