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<!DOCTYPE html>
<!-- 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=1.0"><title>Create CWB subcorpus from matrix with regions. — matrix_to_subcorpus • RcppCWB</title><!-- jquery --><script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.4.1/jquery.min.js" integrity="sha256-CSXorXvZcTkaix6Yvo6HppcZGetbYMGWSFlBw8HfCJo=" crossorigin="anonymous"></script><!-- Bootstrap --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha256-bZLfwXAP04zRMK2BjiO8iu9pf4FbLqX6zitd+tIvLhE=" crossorigin="anonymous"><script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha256-nuL8/2cJ5NDSSwnKD8VqreErSWHtnEP9E7AySL+1ev4=" crossorigin="anonymous"></script><!-- bootstrap-toc --><link rel="stylesheet" href="../bootstrap-toc.css"><script src="../bootstrap-toc.js"></script><!-- Font Awesome icons --><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/all.min.css" integrity="sha256-mmgLkCYLUQbXn0B1SRqzHar6dCnv9oZFPEC1g1cwlkk=" crossorigin="anonymous"><link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.12.1/css/v4-shims.min.css" integrity="sha256-wZjR52fzng1pJHwx4aV2AO3yyTOXrcDW7jBpJtTwVxw=" crossorigin="anonymous"><!-- clipboard.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.6/clipboard.min.js" integrity="sha256-inc5kl9MA1hkeYUt+EC3BhlIgyp/2jDIyBLS6k3UxPI=" crossorigin="anonymous"></script><!-- headroom.js --><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/headroom.min.js" integrity="sha256-AsUX4SJE1+yuDu5+mAVzJbuYNPHj/WroHuZ8Ir/CkE0=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/headroom/0.11.0/jQuery.headroom.min.js" integrity="sha256-ZX/yNShbjqsohH1k95liqY9Gd8uOiE1S4vZc+9KQ1K4=" crossorigin="anonymous"></script><!-- pkgdown --><link href="../pkgdown.css" rel="stylesheet"><script src="../pkgdown.js"></script><meta property="og:title" content="Create CWB subcorpus from matrix with regions. — matrix_to_subcorpus"><meta property="og:description" content="Create CWB subcorpus from matrix with regions."><!-- mathjax --><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/MathJax.js" integrity="sha256-nvJJv9wWKEm88qvoQl9ekL2J+k/RWIsaSScxxlsrv8k=" crossorigin="anonymous"></script><script src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/config/TeX-AMS-MML_HTMLorMML.js" integrity="sha256-84DKXVJXs0/F8OTMzX4UR909+jtl4G7SPypPavF+GfA=" crossorigin="anonymous"></script><!--[if lt IE 9]>
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<h1>Create CWB subcorpus from matrix with regions.</h1>
<small class="dont-index">Source: <a href="https://github.com/PolMine/RcppCWB/blob/HEAD/R/cqp.R" class="external-link"><code>R/cqp.R</code></a></small>
<div class="hidden name"><code>matrix_to_subcorpus.Rd</code></div>
</div>
<div class="ref-description">
<p>Create CWB subcorpus from matrix with regions.</p>
</div>
<div id="ref-usage">
<div class="sourceCode"><pre class="sourceCode r"><code><span><span class="fu">matrix_to_subcorpus</span><span class="op">(</span><span class="va">region_matrix</span>, <span class="va">corpus</span>, <span class="va">subcorpus</span><span class="op">)</span></span></code></pre></div>
</div>
<div id="arguments">
<h2>Arguments</h2>
<dl><dt>region_matrix</dt>
<dd><p>A two-colum <code>matrix</code> with regions in rows: Start
position of region in first column, end position in second column.</p></dd>
<dt>corpus</dt>
<dd><p>A <code>externalptr</code> referencing a corpus such as generated by
<code><a href="cl_find_corpus.html">cl_find_corpus()</a></code>.</p></dd>
<dt>subcorpus</dt>
<dd><p>A length-one <code>character</code> vector providing the name for the
subcorpus.</p></dd>
</dl></div>
<div id="ref-examples">
<h2>Examples</h2>
<div class="sourceCode"><pre class="sourceCode r"><code><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></span>
<span class="r-in"><span><span class="co"># First we generate a subcorpus from a query result</span></span></span>
<span class="r-in"><span><span class="va">oil_context</span> <span class="op"><-</span> <span class="fu"><a href="cqp_query.html">cqp_query</a></span><span class="op">(</span><span class="st">"REUTERS"</span>, subcorpus <span class="op">=</span> <span class="st">"OIL"</span>, query <span class="op">=</span> <span class="st">'[]{3}"oil" []{3}'</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">m</span> <span class="op"><-</span> <span class="fu"><a href="subcorpus_get_ranges.html">subcorpus_get_ranges</a></span><span class="op">(</span><span class="va">oil_context</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">reuters</span> <span class="op"><-</span> <span class="fu"><a href="cl_find_corpus.html">cl_find_corpus</a></span><span class="op">(</span><span class="st">"REUTERS"</span>, registry <span class="op">=</span> <span class="fu"><a href="tmp_registry.html">get_tmp_registry</a></span><span class="op">(</span><span class="op">)</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">p</span> <span class="op"><-</span> <span class="fu">matrix_to_subcorpus</span><span class="op">(</span>subcorpus <span class="op">=</span> <span class="st">"OIL2"</span>, corpus <span class="op">=</span> <span class="va">reuters</span>, region_matrix <span class="op">=</span> <span class="va">m</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="cqp_query.html">cqp_list_subcorpora</a></span><span class="op">(</span><span class="st">"REUTERS"</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="va">x</span> <span class="op"><-</span> <span class="fu"><a href="cqp_query.html">cqp_query</a></span><span class="op">(</span><span class="st">"REUTERS:OIL2"</span>, query <span class="op">=</span> <span class="st">'"crude";'</span>, subcorpus <span class="op">=</span> <span class="st">"CRUDEOIL"</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="subcorpus_get_ranges.html">subcorpus_get_ranges</a></span><span class="op">(</span><span class="va">x</span><span class="op">)</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># clean up</span></span></span>
<span class="r-in"><span><span class="fu"><a href="cqp_query.html">cqp_drop_subcorpus</a></span><span class="op">(</span><span class="st">"REUTERS:OIL"</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="cqp_query.html">cqp_drop_subcorpus</a></span><span class="op">(</span><span class="st">"REUTERS:OIL2"</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="cqp_query.html">cqp_drop_subcorpus</a></span><span class="op">(</span><span class="st">"REUTERS:CRUDEOIL"</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="op">}</span></span></span>
</code></pre></div>
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