This function is generic; method functions can be written to handle
specific classes of objects. Classes which already have methods for
this function include all "corStruct" classes,
see ‘corClasses’.
corMatrix(object, ...)will depend on the method function used; see the appropriate documentation.
an object for which a correlation matrix can be extracted.
some methods for this generic function require additional arguments.
José Pinheiro and Douglas Bates bates@stat.wisc.edu
corMatrix.corStruct,
corMatrix.pdMat,
corMatrix.reStruct