| getCovariate {nlme} | R Documentation | 
This function is generic; method functions can be written to handle
specific classes of objects. Classes which already have methods for
this function include corStruct, corSpatial,
data.frame, and varFunc.
getCovariate(object, form, data)
object | 
 any object with a   | 
form | 
 an optional one-sided formula specifying the covariate(s)
to be extracted. Defaults to   | 
data | 
 a data frame in which to evaluate the variables defined in
  | 
will depend on the method function used; see the appropriate documentation.
Jose Pinheiro and Douglas Bates bates@stat.wisc.edu
Pinheiro, J.C., and Bates, D.M. (2000) "Mixed-Effects Models in S and S-PLUS", Springer, esp. p. 100.
getCovariate.corStruct,
getCovariate.data.frame,
getCovariate.varFunc,
getCovariateFormula
## see the method function documentation