The Matrix (Super-) Class of a Class

Return the (maybe super-)class of class cl from package Matrix, returning character(0) if there is none.

MatrixClass(cl, cld = getClassDef(cl), ...Matrix = TRUE,
            dropVirtual = TRUE, ...)

Arguments

cl

string, class name

cld

its class definition

...Matrix

logical indicating if the result must be of pattern "[dlniz]..Matrix" where the first letter "[dlniz]" denotes the content kind.

dropVirtual

logical indicating if virtual classes are included or not.

...

further arguments are passed to .selectSuperClasses().

Value

a character string

Author

Martin Maechler, 24 Mar 2009

See also

Matrix, the mother of all Matrix classes.

Examples

mkA <- setClass("A", contains="dgCMatrix")
(A <- mkA())
#> 0 x 0 sparse Matrix of class "A"
#> <0 x 0 matrix>
stopifnot(identical(
     MatrixClass("A"),
     "dgCMatrix"))