://lucene.apache.org/core/5_1_0/queries/org/apache/lucene/queries/function/ValueSource.html?is-external=true" title="class or interface in org.apache.lucene.queries.function">ValueSource</a></pre>
<div class="block">Calculate the Haversine distance between two geo hash codes.

 <p>
 Ex: ghhsin(ValueSource, ValueSource, radius)
 <p></div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../../org/apache/solr/search/function/distance/HaversineFunction.html" title="class in org.apache