Description Usage Arguments Value Author(s) References See Also Examples
This function is a constructor for the pdBlocked
class,
representing a positivedefinite blockdiagonal matrix. Each
blockdiagonal element of the underlying matrix is itself a
positivedefinite matrix and is represented internally as an
individual pdMat
object. When value
is
numeric(0)
, a list of uninitialized pdMat
objects, a
list of onesided formulas, or a list of vectors
of character strings, object
is returned
as an uninitialized pdBlocked
object (with just some of its
attributes and its class defined) and needs to have its coefficients
assigned later, generally using the coef
or matrix
replacement
functions. If value
is a list of initialized pdMat
objects, object
will be constructed from the list obtained by
applying as.matrix
to each of the pdMat
elements of
value
. Finally, if value
is a list of numeric vectors,
they are assumed to represent the unrestricted coefficients
of the blockdiagonal elements of the underlying positivedefinite
matrix.
1 
value 
an optional list with elements to be used as the

form 
an optional list of onesided linear formulas specifying the
row/column names for the blockdiagonal elements of the matrix
represented by 
nam 
an optional list of vector of character strings specifying the
row/column names for the blockdiagonal elements of the matrix
represented by object. Each of its components must have
length equal to the dimension of the corresponding blockdiagonal
element and unreplicated elements. This argument is ignored when

data 
an optional data frame in which to evaluate the variables
named in 
pdClass 
an optional vector of character strings naming the

a pdBlocked
object representing a positivedefinite
blockdiagonal matrix, also inheriting from class pdMat
.
José Pinheiro and Douglas Bates [email protected]
Pinheiro, J.C., and Bates, D.M. (2000) "MixedEffects Models in S and SPLUS", Springer, esp. p. 162.
as.matrix.pdMat
,
coef.pdMat
,
pdClasses
,
matrix<.pdMat
1 2 3 
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