R: Read lines from a file or string by chunk.

read_lines_chunked {readr} | R Documentation

## Read lines from a file or string by chunk.

### Description

Read lines from a file or string by chunk.

### Usage

    read_lines_chunked(
      file,
      callback,
      chunk_size = 10000,
      skip = 0,
      locale = default_locale(),
      na = character(),
      progress = show_progress()
    )

    read_lines_raw_chunked(
      file,
      callback,
      chunk_size = 10000,
      skip = 0,
      progress = show_progress()
    )

### Arguments

`file` | Either a path to a file, a connection, or literal data (either a single string or a raw vector). Files ending in `.gz`, `.bz2`, `.xz`, or `.zip` will be automatically uncompressed. Files starting with `http://`, `https://`, `ftp://`, or `ftps://` will be automatically downloaded. Remote gz files can also be automatically downloaded and decompressed. Literal data is most useful for examples and tests. To be recognised as a path, it must be wrapped with `I()`, be a string containing at least one new line, or be a vector containing at least one string with a new line. Using a value of `clipboard()` will read from the system clipboard.
`callback` | A callback function to call on each chunk
`chunk_size` | The number of rows to include in each chunk
`skip` | Number of lines to skip before reading data.
`locale` | The locale controls defaults that vary from place to place. The default locale is US-centric (like R), but you can use `locale()` to create your own locale that controls things like the default time zone, encoding, decimal mark, big mark, and day/month names.
`na` | Character vector of strings to interpret as missing values. Set this option to `character()` to indicate no missing values.
`progress` | Display a progress bar? By default it will only display in an interactive session and not while knitting a document. The automatic progress bar can be disabled by setting option `readr.show_progress` to `FALSE`.

### See Also

Other chunked: `callback`, `melt_delim_chunked()`, `read_delim_chunked()`

[Package readr version 2.0.2 Index]