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 <meta property="og:description" content="This function provides a lower-level API for calling Arrow functions by their
 string function name. You won't use it directly for most applications.
 Many Arrow compute functions are mapped to R methods,
 and in a dplyr evaluation context, all Arrow functions
 are callable with an arrow_ prefix." />


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       </header>

 <div class="row">
   <div class="col-md-9 contents">
     <div class="page-header">
     <h1>Call an Arrow compute function</h1>
     <small class="dont-index">Source: <a href='https://github.com/apache/arrow/blob/master/r/R/compute.R'><code>R/compute.R</code></a></small>
     <div class="hidden name"><code>call_function.Rd</code></div>
     </div>

     <div class="ref-description">
     <p>This function provides a lower-level API for calling Arrow functions by their
 string function name. You won't use it directly for most applications.
 Many Arrow compute functions are mapped to R methods,
 and in a <code>dplyr</code> evaluation context, <a href='list_compute_functions.html'>all Arrow functions</a>
 are callable with an <code>arrow_</code> prefix.</p>
     </div>

     <pre class="usage"><span class='fu'>call_function</span><span class='op'>(</span>
   <span class='va'>function_name</span>,
   <span class='va'>...</span>,
   args <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/list.html'>list</a></span><span class='op'>(</span><span class='va'>...</span><span class='op'>)</span>,
   options <span class='op'>=</span> <span class='fu'>empty_named_list</span><span class='op'>(</span><span class='op'>)</span>
 <span class='op'>)</span></pre>

     <h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
     <table class="ref-arguments">
     <colgroup><col class="name" /><col class="desc" /></colgroup>
     <tr>
       <th>function_name</th>
       <td><p>string Arrow compute function name</p></td>
     </tr>
     <tr>
       <th>...</th>
       <td><p>Function arguments, which may include <code>Array</code>, <code>ChunkedArray</code>, <code>Scalar</code>,
 <code>RecordBatch</code>, or <code>Table</code>.</p></td>
     </tr>
     <tr>
       <th>args</th>
       <td><p>list arguments as an alternative to specifying in <code>...</code></p></td>
     </tr>
     <tr>
       <th>options</th>
       <td><p>named list of C++ function options.</p></td>
     </tr>
     </table>

     <h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>

     <p>An <code>Array</code>, <code>ChunkedArray</code>, <code>Scalar</code>, <code>RecordBatch</code>, or <code>Table</code>, whatever the compute function results in.</p>
     <h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>

     <div class='dont-index'><p><a href='https://arrow.apache.org/docs/cpp/compute.html'>Arrow C++ documentation</a> for the functions and their respective options.</p></div>

     <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
     <pre class="examples"><div class='input'><span class='co'># \donttest{</span>
 <span class='va'>a</span> <span class='op'>&lt;-</span> <span class='va'>Array</span><span class='op'>$</span><span class='fu'>create</span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='fl'>1L</span>, <span class='fl'>2L</span>, <span class='fl'>3L</span>, <span class='cn'>NA</span>, <span class='fl'>5L</span><span class='op'>)</span><span class='op'>)</span>
 <span class='va'>s</span> <span class='op'>&lt;-</span> <span class='va'>Scalar</span><span class='op'>$</span><span class='fu'>create</span><span class='op'>(</span><span class='fl'>4L</span><span class='op'>)</span>
 <span class='fu'>call_function</span><span class='op'>(</span><span class='st'>"fill_null"</span>, <span class='va'>a</span>, <span class='va'>s</span><span class='op'>)</span>
 </div><div class='output co'>#&gt; Array
 #&gt; &lt;int32&gt;
 #&gt; [
 #&gt;   1,
 #&gt;   2,
 #&gt;   3,
 #&gt;   4,
 #&gt;   5
 #&gt; ]</div><div class='input'>
 <span class='va'>a</span> <span class='op'>&lt;-</span> <span class='va'>Array</span><span class='op'>$</span><span class='fu'>create</span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/stats/Normal.html'>rnorm</a></span><span class='op'>(</span><span class='fl'>10000</span><span class='op'>)</span><span class='op'>)</span>
 <span class='fu'>call_function</span><span class='op'>(</span><span class='st'>"quantile"</span>, <span class='va'>a</span>, options <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/list.html'>list</a></span><span class='op'>(</span>q <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/seq.html'>seq</a></span><span class='op'>(</span><span class='fl'>0</span>, <span class='fl'>1</span>, <span class='fl'>0.25</span><span class='op'>)</span><span class='op'>)</span><span class='op'>)</span>
 </div><div class='output co'>#&gt; Array
 #&gt; &lt;double&gt;
 #&gt; [
 #&gt;   -3.30418,
 #&gt;   -0.675502,
 #&gt;   0.0011219,
 #&gt;   0.674598,
 #&gt;   3.58895
 #&gt; ]</div><div class='input'><span class='co'># }</span>
 </div></pre>
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	Many Arrow compute functions are mapped to R methods,
	and in a dplyr evaluation context, all Arrow functions
	are callable with an arrow_ prefix." />




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	</header>

	<div class="row">
	<div class="col-md-9 contents">
	<div class="page-header">
	<h1>Call an Arrow compute function</h1>
	<small class="dont-index">Source: <a href='https://github.com/apache/arrow/blob/master/r/R/compute.R'><code>R/compute.R</code></a></small>
	<div class="hidden name"><code>call_function.Rd</code></div>
	</div>

	<div class="ref-description">
	<p>This function provides a lower-level API for calling Arrow functions by their
	string function name. You won't use it directly for most applications.
	Many Arrow compute functions are mapped to R methods,
	and in a <code>dplyr</code> evaluation context, <a href='list_compute_functions.html'>all Arrow functions</a>
	are callable with an <code>arrow_</code> prefix.</p>
	</div>

	<pre class="usage"><span class='fu'>call_function</span><span class='op'>(</span>
	<span class='va'>function_name</span>,
	<span class='va'>...</span>,
	args <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/list.html'>list</a></span><span class='op'>(</span><span class='va'>...</span><span class='op'>)</span>,
	options <span class='op'>=</span> <span class='fu'>empty_named_list</span><span class='op'>(</span><span class='op'>)</span>
	<span class='op'>)</span></pre>

	<h2 class="hasAnchor" id="arguments"><a class="anchor" href="#arguments"></a>Arguments</h2>
	<table class="ref-arguments">
	<colgroup><col class="name" /><col class="desc" /></colgroup>
	<tr>
	<th>function_name</th>
	<td><p>string Arrow compute function name</p></td>
	</tr>
	<tr>
	<th>...</th>
	<td><p>Function arguments, which may include <code>Array</code>, <code>ChunkedArray</code>, <code>Scalar</code>,
	<code>RecordBatch</code>, or <code>Table</code>.</p></td>
	</tr>
	<tr>
	<th>args</th>
	<td><p>list arguments as an alternative to specifying in <code>...</code></p></td>
	</tr>
	<tr>
	<th>options</th>
	<td><p>named list of C++ function options.</p></td>
	</tr>
	</table>

	<h2 class="hasAnchor" id="value"><a class="anchor" href="#value"></a>Value</h2>

	<p>An <code>Array</code>, <code>ChunkedArray</code>, <code>Scalar</code>, <code>RecordBatch</code>, or <code>Table</code>, whatever the compute function results in.</p>
	<h2 class="hasAnchor" id="see-also"><a class="anchor" href="#see-also"></a>See also</h2>

	<div class='dont-index'><p><a href='https://arrow.apache.org/docs/cpp/compute.html'>Arrow C++ documentation</a> for the functions and their respective options.</p></div>

	<h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
	<pre class="examples"><div class='input'><span class='co'># \donttest{</span>
	<span class='va'>a</span> <span class='op'><-</span> <span class='va'>Array</span><span class='op'>$</span><span class='fu'>create</span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/base/c.html'>c</a></span><span class='op'>(</span><span class='fl'>1L</span>, <span class='fl'>2L</span>, <span class='fl'>3L</span>, <span class='cn'>NA</span>, <span class='fl'>5L</span><span class='op'>)</span><span class='op'>)</span>
	<span class='va'>s</span> <span class='op'><-</span> <span class='va'>Scalar</span><span class='op'>$</span><span class='fu'>create</span><span class='op'>(</span><span class='fl'>4L</span><span class='op'>)</span>
	<span class='fu'>call_function</span><span class='op'>(</span><span class='st'>"fill_null"</span>, <span class='va'>a</span>, <span class='va'>s</span><span class='op'>)</span>
	</div><div class='output co'>#> Array
	#> <int32>
	#> [
	#> 1,
	#> 2,
	#> 3,
	#> 4,
	#> 5
	#> ]</div><div class='input'>
	<span class='va'>a</span> <span class='op'><-</span> <span class='va'>Array</span><span class='op'>$</span><span class='fu'>create</span><span class='op'>(</span><span class='fu'><a href='https://rdrr.io/r/stats/Normal.html'>rnorm</a></span><span class='op'>(</span><span class='fl'>10000</span><span class='op'>)</span><span class='op'>)</span>
	<span class='fu'>call_function</span><span class='op'>(</span><span class='st'>"quantile"</span>, <span class='va'>a</span>, options <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/list.html'>list</a></span><span class='op'>(</span>q <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/base/seq.html'>seq</a></span><span class='op'>(</span><span class='fl'>0</span>, <span class='fl'>1</span>, <span class='fl'>0.25</span><span class='op'>)</span><span class='op'>)</span><span class='op'>)</span>
	</div><div class='output co'>#> Array
	#> <double>
	#> [
	#> -3.30418,
	#> -0.675502,
	#> 0.0011219,
	#> 0.674598,
	#> 3.58895
	#> ]</div><div class='input'><span class='co'># }</span>
	</div></pre>
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