<p>In <a href="https://github.com/mlpack/mlpack/pull/694#discussion_r68390365">src/mlpack/core/data/imputation_methods/listwise_deletion.hpp</a>:</p>
<pre style='color:#555'>&gt; +  void Apply(const arma::Mat&lt;T&gt;&amp; input,
&gt; +             arma::Mat&lt;T&gt;&amp; output,
&gt; +             const T&amp; mappedValue,
&gt; +             const size_t dimension,
&gt; +             const bool transpose = true)
&gt; +  {
&gt; +    // initiate output
&gt; +    output = input;
&gt; +
&gt; +    if (transpose)
&gt; +    {
&gt; +      for (size_t i = 0; i &lt; input.n_rows; ++i)
&gt; +      {
&gt; +         if (input(dimension, i) == mappedValue)
&gt; +         {
&gt; +           output.shed_row(i);
</pre>
<p>What if there are more than two mappedValue(0.0) in one col?</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">&mdash;<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/mlpack/mlpack/pull/694/files/da4e40981c40e171858f41de4e85e08af2c7e48d..d8618ec909005b0453f0a3803ac1e6cc5e588f1f#r68390365">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe/AJ4bFH4EouWmDxRDvgHaFGsDnTHMEY0Hks5qO8vngaJpZM4I07W-">mute the thread</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/AJ4bFBVCi0Kkqi8mRBpcX5gBmPmHNq2fks5qO8vngaJpZM4I07W-.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/694/files/da4e40981c40e171858f41de4e85e08af2c7e48d..d8618ec909005b0453f0a3803ac1e6cc5e588f1f#r68390365"></link>
  <meta itemprop="name" content="View Pull Request"></meta>
</div>
<meta itemprop="description" content="View this Pull Request on GitHub"></meta>
</div>