| collapse {nlme} | R Documentation | 
This function is generic; method functions can be written to handle
specific classes of objects. Currently, only a groupedData
method is available. 
collapse(object, ...)
object | 
 an object to be collapsed, usually a data frame.  | 
... | 
 some methods for the generic may require additional arguments.  | 
will depend on the method function used; see the appropriate documentation.
Jose Pinheiro and Douglas Bates bates@stat.wisc.edu
## see the method function documentation