knownStruc is a model function associating a known variance structure with a factor in the data.
vm(obj, source, singG=NULL)
||A factor in
||The known inverse or relationship matrix:
“PD” positive definite (default)
If source inherits from class
asreml will convert
source internally to either sparse triplet form (class
dsparseMatrix), or dense vector form (class
ddenseMatrix) for processing.
||Create a model term associating a known relationship structure in
||Create a term with the levels of