title: can pvclust combine not variables,but obs. in R
body: <p>Let's take it as example</p>
  
  <pre><code>library("MASS")
  library("pvclust")
  result.par &lt;- pvclust(Boston, nboot=1000, parallel=TRUE)
  plot(result.par)
  </code></pre>
  
  <p>We see that pvclust combines variables.
  Is it possible to combine  observation in clusters</p>
  
  <p>ie. i want output (with cluster var)</p>
  
  <pre><code> id    crim   zn indus chas   nox    rm   age    dis rad tax ptratio  black lstat medv cluster
  1   1 0.00632 18.0  2.31    0 0.538 6.575  65.2 4.0900   1 296    15.3 396.90  4.98 24.0       1
  2   2 0.02731  0.0  7.07    0 0.469 6.421  78.9 4.9671   2 242    17.8 396.90  9.14 21.6       2
  3   3 0.02729  0.0  7.07    0 0.469 7.185  61.1 4.9671   2 242    17.8 392.83  4.03 34.7       1
  4   4 0.03237  0.0  2.18    0 0.458 6.998  45.8 6.0622   3 222    18.7 394.63  2.94 33.4       2
  5   5 0.06905  0.0  2.18    0 0.458 7.147  54.2 6.0622   3 222    18.7 396.90  5.33 36.2       3
  6   6 0.02985  0.0  2.18    0 0.458 6.430  58.7 6.0622   3 222    18.7 394.12  5.21 28.7       3
  7   7 0.08829 12.5  7.87    0 0.524 6.012  66.6 5.5605   5 311    15.2 395.60 12.43 22.9       1
  8   8 0.14455 12.5  7.87    0 0.524 6.172  96.1 5.9505   5 311    15.2 396.90 19.15 27.1       1
  9   9 0.21124 12.5  7.87    0 0.524 5.631 100.0 6.0821   5 311    15.2 386.63 29.93 16.5       2
  10 10 0.17004 12.5  7.87    0 0.524 6.004  85.9 6.5921   5 311    15.2 386.71 17.10 18.9       2
  </code></pre>
  
  <p>how to assing clusters to the obzervations</p>