title: get the ith cluster after performing K-means algorithm in python
body: <p>I have multiple points in a matrix that I tried to classify using K-means algorithm using 'scikit-learn' library in Python. Here is what I've done so far :</p>
  
  <pre><code>k_means = KMeans(init='k-means++', k=5, n_init=10)
  k_means.fit(X) ## X is the matrix containing the data
  ... # some code to plot
  </code></pre>
  
  <p>The result is the following :</p>
  
  <p><img src="https://i.stack.imgur.com/0LQqA.png" alt="enter image description here"></p>
  
  <p>Now I want to get the points that are in the "red" cluster for example. How can I do that with <code>sklearn</code> ?</p>