collapse function

Collapse According to Groups

This function is generic; method functions can be written to handle specific classes of objects. Currently, only a groupedData

method is available.

collapse(object, ...)

Arguments

• object: an object to be collapsed, usually a data frame.
• ...: some methods for the generic may require additional arguments.

Returns

will depend on the method function used; see the appropriate documentation.

Author(s)

José Pinheiro and Douglas Bates bates@stat.wisc.edu

See Also

collapse.groupedData