| pdmatrix-class {lme4} | R Documentation |
The class of positive-definite, symmetric matrices.
Objects can be created by calls of the form new("pdmatrix", ...).
More frequently they are created by coercing a pdMat
object to the pdmatrix class.
.Data:"matrix", which should
be a numeric matrix.
Class "matrix", from data part.
Class "structure", by class "matrix".
Class "array", by class "matrix".
Class "vector", by class "matrix".
signature(from = "pdDiag", to = "pdmatrix"): extract the positive-definite matrix signature(from = "pdIdent", to = "pdmatrix"):
extract the positive-definite matrixsignature(from = "pdLogChol", to = "pdmatrix"):
extract the positive-definite matrixsignature(from = "pdNatural", to = "pdmatrix"):
extract the positive-definite matrixsignature(from = "matrix", to = "pdmatrix"):
create a pdmatrix object from a matrix (does not check for
symmetry or positive-definiteness)signature(from = "pdfactor", to = "pdmatrix"):
create a positive-definite matrix as the crossproduct of the factor.signature(from = "pdmatrix", to = "pdfactor"):
convert a pdmatrix object to its Cholesky factor