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add help for bbox function

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Salvatore Larosa 2014-02-09 18:45:31 +01:00
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<h3>bbox function</h3>
Returns 1 if the geometries spatially intersect the bounding box defined and 0 if they don't.
<h4>Syntax</h4>
<pre>bbox( a, b )</pre>
<h4>Arguments</h4>
a &rarr; geometry
b &rarr; geometry
<h4>Example</h4>
<pre>bbox( geomFromWKT( 'POINT(4 5)' ) , geomFromWKT( 'LINESTRING(3 3 , 4 4 , 5 5)' )) &rarr; returns 1</pre>
<pre>bbox( geomFromWKT( 'POINT(6 5)' ) , geomFromWKT( 'POLYGON((3 3 , 4 4 , 5 5, 3 3))' )) &rarr; returns 0</pre>