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<!-- Generated by pkgdown: do not edit by hand --><html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="utf-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"><title>Extract attribute. Returns NA if none — get_attr • REDCapCAST</title><!-- favicons --><link rel="icon" type="image/png" sizes="16x16" href="../favicon-16x16.png"><link rel="icon" type="image/png" sizes="32x32" href="../favicon-32x32.png"><link rel="apple-touch-icon" type="image/png" sizes="180x180" href="../apple-touch-icon.png"><link rel="apple-touch-icon" type="image/png" sizes="120x120" href="../apple-touch-icon-120x120.png"><link rel="apple-touch-icon" type="image/png" sizes="76x76" href="../apple-touch-icon-76x76.png"><link rel="apple-touch-icon" type="image/png" sizes="60x60" href="../apple-touch-icon-60x60.png"><script src="../deps/jquery-3.6.0/jquery-3.6.0.min.js"></script><meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"><link href="../deps/bootstrap-5.3.1/bootstrap.min.css" rel="stylesheet"><script src="../deps/bootstrap-5.3.1/bootstrap.bundle.min.js"></script><link href="../deps/font-awesome-6.5.2/css/all.min.css" rel="stylesheet"><link href="../deps/font-awesome-6.5.2/css/v4-shims.min.css" rel="stylesheet"><script src="../deps/headroom-0.11.0/headroom.min.js"></script><script src="../deps/headroom-0.11.0/jQuery.headroom.min.js"></script><script src="../deps/bootstrap-toc-1.0.1/bootstrap-toc.min.js"></script><script src="../deps/clipboard.js-2.0.11/clipboard.min.js"></script><script src="../deps/search-1.0.0/autocomplete.jquery.min.js"></script><script src="../deps/search-1.0.0/fuse.min.js"></script><script src="../deps/search-1.0.0/mark.min.js"></script><!-- pkgdown --><script src="../pkgdown.js"></script><meta property="og:title" content="Extract attribute. Returns NA if none — get_attr"><meta name="description" content="Extract attribute. Returns NA if none"><meta property="og:description" content="Extract attribute. Returns NA if none"><meta property="og:image" content="https://agdamsbo.github.io/REDCapCAST/logo.png"></head><body>
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<a class="navbar-brand me-2" href="../index.html">REDCapCAST</a>
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<img src="../logo.png" class="logo" alt=""><h1>Extract attribute. Returns NA if none</h1>
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<small class="dont-index">Source: <a href="https://github.com/agdamsbo/REDCapCAST/blob/main/R/as_factor.R" class="external-link"><code>R/as_factor.R</code></a></small>
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<div class="d-none name"><code>get_attr.Rd</code></div>
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<div class="ref-description section level2">
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<p>Extract attribute. Returns NA if none</p>
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</div>
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<div class="section level2">
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<h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
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<div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">get_attr</span><span class="op">(</span><span class="va">data</span>, attr <span class="op">=</span> <span class="cn">NULL</span><span class="op">)</span></span></code></pre></div>
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<div class="section level2">
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<h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>
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<dl><dt id="arg-data">data<a class="anchor" aria-label="anchor" href="#arg-data"></a></dt>
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<dd><p>vector</p></dd>
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<dt id="arg-attr">attr<a class="anchor" aria-label="anchor" href="#arg-attr"></a></dt>
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<dd><p>attribute name</p></dd>
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</dl></div>
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<div class="section level2">
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<h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
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<p>character vector</p>
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</div>
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<div class="section level2">
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<h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
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<div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/base/attr.html" class="external-link">attr</a></span><span class="op">(</span><span class="va">mtcars</span><span class="op">$</span><span class="va">mpg</span>, <span class="st">"label"</span><span class="op">)</span> <span class="op"><-</span> <span class="st">"testing"</span></span></span>
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<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/base/do.call.html" class="external-link">do.call</a></span><span class="op">(</span><span class="va">c</span>, <span class="fu"><a href="https://rdrr.io/r/base/lapply.html" class="external-link">sapply</a></span><span class="op">(</span><span class="va">mtcars</span>, <span class="va">get_attr</span><span class="op">)</span><span class="op">)</span></span></span>
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<span class="r-out co"><span class="r-pr">#></span> $mpg.label</span>
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<span class="r-out co"><span class="r-pr">#></span> [1] "testing"</span>
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<span class="r-out co"><span class="r-pr">#></span> </span>
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<span class="r-in"><span><span class="kw">if</span> <span class="op">(</span><span class="cn">FALSE</span><span class="op">)</span> <span class="op">{</span> <span class="co"># \dontrun{</span></span></span>
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<span class="r-in"><span><span class="va">mtcars</span> <span class="op">|></span></span></span>
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<span class="r-in"><span> <span class="fu"><a href="numchar2fct.html">numchar2fct</a></span><span class="op">(</span>numeric.threshold <span class="op">=</span> <span class="fl">6</span><span class="op">)</span> <span class="op">|></span></span></span>
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<span class="r-in"><span> <span class="fu"><a href="ds2dd_detailed.html">ds2dd_detailed</a></span><span class="op">(</span><span class="op">)</span></span></span>
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<span class="r-in"><span><span class="op">}</span> <span class="co"># }</span></span></span>
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</code></pre></div>
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<p>Developed by Andreas Gammelgaard Damsbo, Paul Egeler.</p>
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<p>Site built with <a href="https://pkgdown.r-lib.org/" class="external-link">pkgdown</a> 2.1.1.</p>
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