| dgBCMatrix-class {Matrix} | R Documentation |
The dgCMatrix class is a class of sparse blocked matrices in
the compressed, sparse, column-oriented format. In this
implementation the non-zero elements in the columns are sorted into
increasing row order.
Objects can be created by calls of the form new("dgBCMatrix",
...).
Objects in this class have a structure similar to those in the
dgCMatrix class except that each nonzero “element” is
itself a dense matrix with a given number of rows and columns. These
objects are used in the representation of linear mixed-effects model
structures in the lme4 package.
p:"integer" of pointers, one
for each column, to the initial (zero-based) index of elements in
the column.i:"integer" of length nnzero
(number of non-zero elements). These are the row numbers for
each non-zero element in the matrix.x:"array" - the non-zero
elements of the matrix. This is a three-dimensional array with
the third dimension being nnzero.signature(from = "dgBCMatrix", to = "dgCMatrix")signature(from = "dgBCMatrix", to = "dgTMatrix")signature(from = "dgBCMatrix", to = "dgeMatrix")signature(from = "dgBCMatrix", to = "matrix")signature(from = "dgCMatrix", to = "dgBCMatrix")