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<!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: Parse logicals, integers, and reals</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 parse_atomic {readr}"><tr><td>parse_atomic {readr}</td><td style="text-align: right;">R Documentation</td></tr></table> <h2>Parse logicals, integers, and reals</h2> <h3>Description</h3> <p>Use <code>parse_*()</code> if you have a character vector you want to parse. Use <code>col_*()</code> in conjunction with a <code>read_*()</code> function to parse the values as they're read in. </p> <h3>Usage</h3> <pre> parse_logical(x, na = c("", "NA"), locale = default_locale(), trim_ws = TRUE) parse_integer(x, na = c("", "NA"), locale = default_locale(), trim_ws = TRUE) parse_double(x, na = c("", "NA"), locale = default_locale(), trim_ws = TRUE) parse_character(x, na = c("", "NA"), locale = default_locale(), trim_ws = TRUE) col_logical() col_integer() col_double() col_character() </pre> <h3>Arguments</h3> <table summary="R argblock"> <tr valign="top"><td><code>x</code></td> <td> <p>Character vector of values to parse.</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>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>trim_ws</code></td> <td> <p>Should leading and trailing whitespace be trimmed from each field before parsing it?</p> </td></tr> </table> <h3>See Also</h3> <p>Other parsers: <code><a href="col_skip.html">col_skip</a></code>, <code><a href="spec.html">cols_condense</a></code>, <code><a href="cols.html">cols</a></code>, <code><a href="parse_datetime.html">parse_datetime</a></code>, <code><a href="parse_factor.html">parse_factor</a></code>, <code><a href="parse_guess.html">parse_guess</a></code>, <code><a href="parse_number.html">parse_number</a></code>, <code><a href="parse_vector.html">parse_vector</a></code> </p> <h3>Examples</h3> <pre> parse_integer(c("1", "2", "3")) parse_double(c("1", "2", "3.123")) parse_number("$1,123,456.00") # Use locale to override default decimal and grouping marks es_MX <- locale("es", decimal_mark = ",") parse_number("$1.123.456,00", locale = es_MX) # Invalid values are replaced with missing values with a warning. x <- c("1", "2", "3", "-") parse_double(x) # Or flag values as missing parse_double(x, na = "-") </pre> <hr /><div style="text-align: center;">[Package <em>readr</em> version 1.3.1 <a href="00Index.html">Index</a>]</div> </body></html>