<p>I made a few changes to <code>ColumnsToBlocks</code>; please let me know if I did anything wrong:</p>

<p><a href="https://github.com/mlpack/mlpack/commit/995e0c0c2f41e45c4d34a54df4bdd743bc920f85" class="commit-link"><tt>995e0c0</tt></a>..<a href="https://github.com/mlpack/mlpack/commit/10b9d45b806a3e879b0564d78ccb183ebc7051ba" class="commit-link"><tt>10b9d45</tt></a></p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">&mdash;<br>Reply to this email directly or <a href="https://github.com/mlpack/mlpack/pull/465#issuecomment-160678549">view it on GitHub</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/AJ4bFEmLq0oiFgBLp8kVYqf0XUtaaeR9ks5pLG_hgaJpZM4GWT_f.gif" width="1" /></p>
<div itemscope itemtype="http://schema.org/EmailMessage">
<div itemprop="action" itemscope itemtype="http://schema.org/ViewAction">
  <link itemprop="url" href="https://github.com/mlpack/mlpack/pull/465#issuecomment-160678549"></link>
  <meta itemprop="name" content="View Pull Request"></meta>
</div>
<meta itemprop="description" content="View this Pull Request on GitHub"></meta>
</div>