2013-09-15 19:21:58 +02:00

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<h3>centroid function</h3>
Returns the geometric center of a geometry.
<h4>Syntax</h4>
<pre>centroid(a)</pre>
<h4>Arguments</h4>
b &rarr; geometry
<h4>Example</h4>
<pre> centroid($geometry) &rarr; returns a point geometry</pre>