title: Clustering list for hclust function
body: <p>Using <code>plot(hclust(dist(x)))</code> method, I was able to draw a cluster tree map. It works. Yet I would like to get a list of all clusters, not a tree diagram, because I have huge amount of data (like 150K nodes) and the plot gets messy. </p>
  
  <p>In other words, lets say if <code>a b c</code> is a cluster and if <code>d e f g</code> is a cluster then I would like to get something like this:</p>
  
  <pre><code>1 a,b,c
  2 d,e,f,g
  </code></pre>
  
  <p>Please note that this is not exactly what I want to get as an "output". It is just an example. I just would like to be able to get a list of clusters instead of a tree plot  It could be vector, matrix or just simple numbers that show which groups elements belong to.</p>
  
  <p>How is this possible?</p>