R: Query or Set a ‘Comment’ Attribute

comment {base} | R Documentation

## Query or Set a ‘Comment’ Attribute

### Description

These functions set and query a comment attribute for any R objects. This is typically useful for `data.frame`s or model fits.

Contrary to other `attributes`, the `comment` is not printed (by `print` or `print.default`).

Assigning `NULL` or a zero-length character vector removes the comment.

### Usage

    comment(x)
    comment(x) <- value

### Arguments

`x` | any R object
`value` | a `character` vector, or `NULL`.

### See Also

`attributes` and `attr` for other attributes.

### Examples

    x <- matrix(1:12, 3,4)
    comment(x) <- c("This is my very important data from experiment #0234",
                    "Jun 5, 1998")
    x
    comment(x)

[Package base version 2.8.1 Index]