cBind {Matrix} | R Documentation

## Versions of 'cbind' and 'rbind' recursively built on cbind2/rbind2

### Description

The base functions `cbind` and `rbind` are defined for an arbitrary number of arguments and hence have the first formal argument `...`. For that reason, S4 methods cannot easily be defined for binding together matrices inheriting from `Matrix`.

For that reason, `cbind2` and `rbind2` have been provided for binding together two matrices, and we have defined methods for these and the `'Matrix'`-matrices.

As a substitute for S4-enabled versions of `cbind` and `rbind`, you can use `cBind` and `rBind` with identical syntax and semantic in order to bind together multiple matrices (`"matrix"` or `"Matrix"` and vectors.

### Usage

    cBind(..., deparse.level = 1)
    rBind(..., deparse.level = 1)

### Arguments

`...` | matrix-like R objects to be bound together, see `cbind` and `rbind`.
`deparse.level` | integer determining under which circumstances column and row names are built from the actual arguments' ‘expression’, see `cbind`.

### Details

The implementation of these is recursive, calling `cbind2` or `rbind2` respectively, where these have methods defined and so should dispatch appropriately.

### Value

typically a ‘matrix-like’ object of a similar `class` as the first argument in `...`.

### Author(s)

Martin Maechler

### See Also

`cbind2`, `cbind`, `Methods`.

### Examples

    (a <- matrix(c(2:1,1:2), 2,2))
    cbind(0, rBind(a, 7)) # remains traditional matrix

    D <- Diagonal(2)
    cBind(4, a, D, -1, D, 0) # a sparse Matrix

[Package Matrix version 0.999375-33 Index]