EVOLUTION-MANAGER
Edit File: read_lines_chunked.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: Read lines from a file or string by chunk.</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" type="text/css" href="R.css" /> </head><body> <table width="100%" summary="page for read_lines_chunked {readr}"><tr><td>read_lines_chunked {readr}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Read lines from a file or string by chunk.</h2> <h3>Description</h3> <p>Read lines from a file or string by chunk. </p> <h3>Usage</h3> <pre> 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()) </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>file</code></td> <td> <p>Either a path to a file, a connection, or literal data (either a single string or a raw vector). </p> <p>Files ending in <code>.gz</code>, <code>.bz2</code>, <code>.xz</code>, or <code>.zip</code> will be automatically uncompressed. Files starting with <code>http://</code>, <code>https://</code>, <code>ftp://</code>, or <code>ftps://</code> will be automatically downloaded. Remote gz files can also be automatically downloaded and decompressed. </p> <p>Literal data is most useful for examples and tests. It must contain at least one new line to be recognised as data (instead of a path) or be a vector of greater than length 1. </p> <p>Using a value of <code><a href="clipboard.html">clipboard()</a></code> will read from the system clipboard.</p> </td></tr> <tr valign="top"><td><code>callback</code></td> <td> <p>A callback function to call on each chunk</p> </td></tr> <tr valign="top"><td><code>chunk_size</code></td> <td> <p>The number of rows to include in each chunk</p> </td></tr> <tr valign="top"><td><code>skip</code></td> <td> <p>Number of lines to skip before reading data.</p> </td></tr> <tr valign="top"><td><code>locale</code></td> <td> <p>The locale controls defaults that vary from place to place. The default locale is US-centric (like R), but you can use <code><a href="locale.html">locale()</a></code> to create your own locale that controls things like the default time zone, encoding, decimal mark, big mark, and day/month names.</p> </td></tr> <tr valign="top"><td><code>na</code></td> <td> <p>Character vector of strings to interpret as missing values. Set this option to <code>character()</code> to indicate no missing values.</p> </td></tr> <tr valign="top"><td><code>progress</code></td> <td> <p>Display a progress bar? By default it will only display in an interactive session and not while knitting a document. The display is updated every 50,000 values and will only display if estimated reading time is 5 seconds or more. The automatic progress bar can be disabled by setting option <code>readr.show_progress</code> to <code>FALSE</code>.</p> </td></tr> </table> <h3>See Also</h3> <p>Other chunked: <code><a href="callback.html">callback</a></code>, <code><a href="melt_delim_chunked.html">melt_delim_chunked</a></code>, <code><a href="read_delim_chunked.html">read_delim_chunked</a></code> </p> <hr /><div style="text-align: center;">[Package <em>readr</em> version 1.3.1 <a href="00Index.html">Index</a>]</div> </body></html>