/org/apache/commons/math3/analysis/differentiation/SparseGradient.html" title="class in org.apache.commons.math3.analysis.differentiation">SparseGradient</a>&gt;</code></td>
<td class="colLast"><span class="strong">SparseGradient.</span><code><strong><a href="../../../../../org/apache/commons/math3/analysis/differentiation/SparseGradient.html#getField()">getField</a></strong>()</code>
<div class="block">Get the <a href="../../../../../org/apache/commons/math3/Field.html" title="interface in org.apache.commo