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<title>geomean. pfm 0.3-7</title>
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Johannes Ranke
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<h1>Calculate the geometric mean</h1>
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<div class="span8">
<h2>Usage</h2>
<pre><div>geomean(x, na.rm = TRUE)</div></pre>
<h2>Arguments</h2>
<dl>
<dt>x</dt>
<dd>Vector of numbers</dd>
<dt>na.rm</dt>
<dd>Should NA values be omitted?</dd>
</dl>
<div class="Value">
<h2>Value</h2>
<p><dl>
The geometric mean
</dl></p>
</div>
<div class="Description">
<h2>Description</h2>
<p>Based on some posts in a thread on Stackoverflow
<a href = 'http://stackoverflow.com/questions/2602583/geometric-mean-is-there-a-built-in'>http://stackoverflow.com/questions/2602583/geometric-mean-is-there-a-built-in</a>
This function checks for negative values, removes NA values per default and
returns 0 if at least one element of the vector is 0.</p>
</div>
<h2 id="examples">Examples</h2>
<pre class="examples"><div class='input'>geomean(c(1, 3, 9))
</div>
<div class='output'>[1] 3
</div>
<div class='input'>geomean(c(1, 3, NA, 9))
</div>
<div class='output'>[1] 3
</div>
<div class='input'>## Not run: geomean(c(1, -3, 9)) # returns an error
</div></pre>
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<h2>Author</h2>
Johannes Ranke
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