compositions (version 2.0-8)

split: Splitting datasets in groups given by factors

Description

Splits data sets of compositions in groups given by factors, and gives the same class as the data to the result.

Usage

# S3 method for acomp
split(x,f,drop=FALSE,...)
# S3 method for rcomp
split(x,f,drop=FALSE,...)
# S3 method for aplus
split(x,f,drop=FALSE,...)
# S3 method for rplus
split(x,f,drop=FALSE,...)
# S3 method for rmult
split(x,f,drop=FALSE,...)
# S3 method for ccomp
split(x,f,drop=FALSE,...)

Value

a list of objects of the same type as x.

Arguments

x

a dataset or a single vector of some type

f

a factor that defines the grouping or a list of factors

drop

drop=FALSE also gives (empty) datsets for empty categories

...

Further arguments passed to split.default. Currently (and probably) without any use.

Author

K.Gerald v.d. Boogaart http://www.stat.boogaart.de

See Also

split

Examples

  data(SimulatedAmounts)
  split(acomp(sa.groups),sa.groups.area)
  lapply( split(acomp(sa.groups),sa.groups.area), mean)