site/docs/1.4.0/api/R/count.html


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<table width="100%" summary="page for count,DataFrame-method {SparkR}"><tr><td>count,DataFrame-method {SparkR}</td><td align="right">R Documentation</td></tr></table>

<h2>Count</h2>

<h3>Description</h3>

<p>Returns the number of rows in a DataFrame
</p>


<h3>Usage</h3>

<pre>
## S4 method for signature 'DataFrame'
count(x)
</pre>


<h3>Arguments</h3>

<table summary="R argblock">
<tr valign="top"><td><code>x</code></td>
<td>
<p>A SparkSQL DataFrame</p>
</td></tr>
</table>


<h3>Examples</h3>

<pre><code class="r">## Not run: 
##D sc &lt;- sparkR.init()
##D sqlContext &lt;- sparkRSQL.init(sc)
##D path &lt;- &quot;path/to/file.json&quot;
##D df &lt;- jsonFile(sqlContext, path)
##D count(df)
## End(Not run)
</code></pre>


<hr><div align="center">[Package <em>SparkR</em> version 1.4.0 <a href="00Index.html">Index</a>]</div>
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