ldiMatrix-class {Matrix} | R Documentation

## Class "ldiMatrix" of Diagonal Logical Matrices

### Description

The class `"ldiMatrix"` of logical diagonal matrices.

### Objects from the Class

Objects can be created by calls of the form `new("ldiMatrix", ...)` but typically rather via `Diagonal`.

### Slots

`x`:
  `"logical"` vector.
`diag`:
  `"character"` string, either "U" or "N", see `ddiMatrix`.
`Dim`,`Dimnames`:
  matrix dimension and `dimnames`, see the `Matrix` class description.

### Extends

Class `"diagonalMatrix"` and class `"lMatrix"`, directly.

Class `"sparseMatrix"`, by class `"diagonalMatrix"`.

### See Also

Classes `ddiMatrix` and `diagonalMatrix`; function `Diagonal`.

### Examples

    (lM <- Diagonal(x = c(TRUE,FALSE,FALSE)))
    str(lM)#> gory details (slots)

    crossprod(lM) # numeric
    (nM <- as(lM, "nMatrix"))# -> sparse (not formally ``diagonal'')
    crossprod(nM) # logical sparse

[Package Matrix version 0.999375-33 Index]