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Description

An expression that takes values from one or more fields and returns the average of them.

Example

<expression name="Average\_Column" class="org.jfree.report.function.AverageExpression"> 
  <properties>
    <property name="field\[0\]">Jan\_Column</property>
    <property name="field\[1\]">Feb\_Column</property>
    <property name="field\[2\]">Mar\_Column</property>
  </properties>
</expression>
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