by-split: Split a data frame
In doBy: Groupwise Statistics, LSmeans, Linear Contrasts, Utilities

Description Usage Arguments Value Author(s) See Also Examples

Split a dataframe according to the levels of variables in the dataframe. The variables to split by can be given as a formula or as a character vector.

1	splitBy(formula, data = parent.frame(), drop = TRUE)

`formula`	Variables to split data frame by, as <e2><80><98>as.quoted<e2><80><99> variables, a formula or character vector.
`data`	A data frame
`drop`	Logical indicating if levels that do not occur should be dropped. Deprecated; levels that do not occur are ignored.
`...`	Additional arguments, currently not used.

A list of dataframes.

S<c3><b8>ren H<c3><b8>jsgaard, [email protected]

orderBy, summaryBy, transformBy

data(dietox, package="doBy")
splitBy(formula = ~Evit + Cu, data = dietox)
splitBy(formula = c("Evit", "Cu"), data = dietox)

splitBy(~Month, data=airquality)
splitBy("Month", data=airquality)