<p>And another issue:<br>
If I am not mistaken <code>arma::Mat&lt;smth&gt;::Col(n)</code> returns a class that is not derived from <code>arma::Col</code>.<br>
Maybe it is better to use a template instead of <code>arma::Col&lt;ElemType&gt;</code>?<br>
i.e.</p>

<pre><code>template&lt;typenameTreeType, typename T&gt;
int RecursiveHilbertValue::CompareWith(TreeType *tree, const T &amp;pt)
</code></pre>

<p>instead of</p>

<pre><code>template&lt;typename TreeType,typename ElemType&gt;
int RecursiveHilbertValue::CompareWith(TreeType *tree, const arma::Col&lt;ElemType&gt; &amp;pt)
</code></pre>

<p>How do you think?</p>

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