ffbase (version 0.6-2)

condMean: Fast conditional mean

Description

condMean works like a very fast version of tapply with FUN=mean.

Usage

condMean(x, index, na.rm = FALSE, ...)

Arguments

x

numeric vector to be averaged

index

(list of) factor(s) for which the mean will be calculated

na.rm

logical If TRUE NA values will be removed

...

not used

Value

• array with dimensions of index