Append {DescTools} | R Documentation |

## Append Elements to Objects

### Description

Append elements to a number of various objects as vectors, matrices, data.frames and lists. In a matrix either rows or columns can be inserted at any position. In data frames any vectors can be inserted. `values`

will be recycled to the necessary length.

### Usage

```
Append(x, values, after = NULL, ...)
## S3 method for class 'matrix'
Append(x, values, after = NULL, rows = FALSE, names = NULL, ...)
## S3 method for class 'data.frame'
Append(x, values, after = NULL, rows = FALSE, names = NULL, ...)
## Default S3 method:
Append(x, values, after = NULL, ...)
```

### Arguments

`x` |
object for the elements to be inserted |

`values` |
the elements to be inserted |

`after` |
a subscript, after which the values are to be appended. If it's missing the values will be appended after the last element (or column/row). |

`rows` |
logical, defining if vector should be added as row or as column. Default is column ( |

`names` |
the dimension names for the inserted elements(s) |

`...` |
further arguments (not used here) |

### Details

The vector `x`

will be recycled to a length of the next multiple of the number of rows (or columns) of the matrix `m`

and will be inserted such that the first inserted row (column) has the index `i`

. If the dimnames are given, they will be used no matter if the matrix m has already dimnames defined or not.

### Value

An object containing the values in x with the elements of values appended after the specified element of x.

### Author(s)

Andri Signorell <andri@signorell.net>

### See Also

### Examples

```
Append(1:5, 0:1, after = 3) # the same as append
# Insert columns and rows
x <- matrix(runif(25), 5)
Append(x, values=1:10, after=2, names = c("X","Y"))
Append(x, values=1:10, after=2)
Append(x, values=1:10, after=2, names = c("X","Y"))
Append(x, values=1:10, after=2)
# append to a data.frame
d.frm <- data.frame("id" = c(1,2,3),
"code" = c("AAA", "BBB", "CCC"),
"val" = c(111, 222, 333))
z <- c(10, 20, 30)
Append(d.frm, z, after=2, names="ZZZ")
```

*DescTools*version 0.99.54 Index]