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<img src="../logo.png" class="logo" alt=""><h1>Split to chunks of size n</h1>
<small class="dont-index">Source: <a href="https://github.com/agdamsbo/stRoke/blob/HEAD/R/chunks_of_n.R" class="external-link"><code>R/chunks_of_n.R</code></a></small>
<div class="d-none name"><code>chunks_of_n.Rd</code></div>
</div>
<div class="ref-description section level2">
<p>Split to chunks of size n</p>
</div>
<div class="section level2">
<h2 id="ref-usage">Usage<a class="anchor" aria-label="anchor" href="#ref-usage"></a></h2>
<div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">chunks_of_n</span><span class="op">(</span><span class="va">d</span>, <span class="va">n</span>, label <span class="op">=</span> <span class="cn">NULL</span>, even <span class="op">=</span> <span class="cn">FALSE</span>, pattern <span class="op">=</span> <span class="cn">NULL</span><span class="op">)</span></span></code></pre></div>
</div>
<div class="section level2">
<h2 id="arguments">Arguments<a class="anchor" aria-label="anchor" href="#arguments"></a></h2>
<dl><dt>d</dt>
<dd><p>data. Can be vector or data frame.</p></dd>
<dt>n</dt>
<dd><p>number of chunks</p></dd>
<dt>label</dt>
<dd><p>naming prefix for chunk names</p></dd>
<dt>even</dt>
<dd><p>boolean to set if size of chunks should be evenly distributed.</p></dd>
<dt>pattern</dt>
<dd><p>regex pattern to extract names from provided vector. If data
frame, will assume first column is name.</p></dd>
</dl></div>
<div class="section level2">
<h2 id="value">Value<a class="anchor" aria-label="anchor" href="#value"></a></h2>
<p>List of length n</p>
</div>
<div class="section level2">
<h2 id="ref-examples">Examples<a class="anchor" aria-label="anchor" href="#ref-examples"></a></h2>
<div class="sourceCode"><pre class="sourceCode r"><code><span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/utils/head.html" class="external-link">tail</a></span><span class="op">(</span><span class="fu">chunks_of_n</span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/seq.html" class="external-link">seq_len</a></span><span class="op">(</span><span class="fl">100</span><span class="op">)</span>,<span class="fl">7</span><span class="op">)</span>,<span class="fl">3</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $`13`</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 85 86 87 88 89 90 91</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $`14`</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 92 93 94 95 96 97 98</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $`15`</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 99 100</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/utils/head.html" class="external-link">tail</a></span><span class="op">(</span><span class="fu">chunks_of_n</span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/seq.html" class="external-link">seq_len</a></span><span class="op">(</span><span class="fl">100</span><span class="op">)</span>,<span class="fl">7</span>,even<span class="op">=</span><span class="cn">TRUE</span><span class="op">)</span>,<span class="fl">3</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $`13`</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 83 84 85 86 87 88</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $`14`</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 89 90 91 92 93 94</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $`15`</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> [1] 95 96 97 98 99 100</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-in"><span><span class="va">ds</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/base/data.frame.html" class="external-link">data.frame</a></span><span class="op">(</span>nm<span class="op">=</span><span class="fu"><a href="https://rdrr.io/r/base/paste.html" class="external-link">paste0</a></span><span class="op">(</span><span class="st">"Sub"</span>,</span></span>
<span class="r-in"><span><span class="fu"><a href="add_padding.html">add_padding</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/base/colnames.html" class="external-link">rownames</a></span><span class="op">(</span><span class="fu">stRoke</span><span class="fu">::</span><span class="va"><a href="talos.html">talos</a></span><span class="op">)</span><span class="op">)</span><span class="op">)</span>,<span class="fu">stRoke</span><span class="fu">::</span><span class="va"><a href="talos.html">talos</a></span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/utils/head.html" class="external-link">head</a></span><span class="op">(</span><span class="fu">chunks_of_n</span><span class="op">(</span><span class="va">ds</span>,<span class="fl">7</span>,pattern<span class="op">=</span><span class="st">"Sub[0-9]{3}"</span>,label<span class="op">=</span><span class="st">"grp"</span><span class="op">)</span>,<span class="fl">2</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $`grp-Sub038-Sub011`</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> nm rtreat mrs_1 mrs_6 hypertension diabetes civil</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 38 Sub038 Active 1 1 no no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 434 Sub434 Active 1 1 yes no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 588 Sub588 Active 2 2 yes no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 42 Sub042 Active 0 0 yes no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 160 Sub160 Placebo 1 1 yes no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 174 Sub174 Active 0 1 yes no alone</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 11 Sub011 Placebo 2 1 yes yes alone</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $`grp-Sub601-Sub062`</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> nm rtreat mrs_1 mrs_6 hypertension diabetes civil</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 601 Sub601 Placebo 1 1 no no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 412 Sub412 Active 0 0 yes no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 88 Sub088 Placebo 1 1 yes yes partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 56 Sub056 Placebo 0 0 no no alone</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 235 Sub235 Placebo 2 1 yes yes alone</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 205 Sub205 Active 3 3 no no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 62 Sub062 Active 2 2 yes no alone</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-in"><span><span class="co">## Please notice that no sorting is performed. This is on purpose to preserve</span></span></span>
<span class="r-in"><span><span class="co">## original sorting. If sorting is intended, try something like this:</span></span></span>
<span class="r-in"><span><span class="va">ds</span><span class="op">[</span><span class="fu"><a href="https://rdrr.io/r/base/order.html" class="external-link">order</a></span><span class="op">(</span><span class="va">ds</span><span class="op">$</span><span class="va">nm</span><span class="op">)</span>,<span class="op">]</span> <span class="op">|&gt;</span> <span class="fu">chunks_of_n</span><span class="op">(</span><span class="fl">7</span>,pattern<span class="op">=</span><span class="st">"Sub[0-9]{3}"</span>,label<span class="op">=</span><span class="st">"grp"</span><span class="op">)</span> <span class="op">|&gt;</span> </span></span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/utils/head.html" class="external-link">head</a></span><span class="op">(</span><span class="fl">2</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $`grp-Sub001-Sub020`</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> nm rtreat mrs_1 mrs_6 hypertension diabetes civil</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 1 Sub001 Placebo 0 0 yes no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 2 Sub002 Placebo 2 1 no no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 7 Sub007 Placebo 1 1 yes no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 9 Sub009 Placebo 1 1 no no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 11 Sub011 Placebo 2 1 yes yes alone</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 13 Sub013 Active 1 1 yes no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 20 Sub020 Placebo 1 2 no no alone</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> $`grp-Sub022-Sub038`</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> nm rtreat mrs_1 mrs_6 hypertension diabetes civil</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 22 Sub022 Placebo 2 1 no no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 26 Sub026 Placebo 2 4 no no alone</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 28 Sub028 Active 2 2 yes no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 29 Sub029 Placebo 2 2 no no alone</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 33 Sub033 Placebo 0 0 yes no alone</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 34 Sub034 Active 1 1 no no alone</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 38 Sub038 Active 1 1 no no partner</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> </span>
</code></pre></div>
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