Extract Covariate from an Object
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.
José 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.
## see the method function documentation
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