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<h4>getInstancesValueAt</h4>
<pre>public&nbsp;double&nbsp;getInstancesValueAt(int&nbsp;rowIndex,
                         int&nbsp;columnIndex)</pre>
<div class="block">returns the double value of the underlying Instances object at the
 given position, -1 if out of bounds</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>rowIndex</code> - the row index</dd><dd><code>columnIndex</code> - the column index</dd>
<dt><span class=