Divide into groups

split.PKNCAconc divides data into individual groups defined by getGroups.PKNCAconc.

# S3 method for PKNCAconc
split(x, f = getGroups(x), drop = TRUE, ...)

# S3 method for PKNCAdata
split(x, ...)

# S3 method for PKNCAdose
split(x, f = getGroups(x), drop = TRUE, ...)

Arguments

x	the object to split
f	the groups to use for splitting the object
drop	logical indicating if levels that do not occur should be dropped.
...	Ignored.

Value

A list of objects with an attribute of groupid consisting of a data.frame with columns for each group.

Details

If x is NA then a list with NA as the only element and a "groupid" attribute of an empty data.frame is returned.