title: Row rename after cbind matrix
body: <pre><code>CPT = cbind(CPTa$Seller,DisCPT,DisSellCPT)
  CPT
  
           [,1]     [,2]       [,3]       [,4]       [,5]       [,6]       [,7]       [,8]
  [1,]     1715 10656.10       0.00   14642.54   21035.93 1268625.67 1274133.34 1242871.98
  [2,]     2432 10655.38   14642.54       0.00   13977.05 1280809.90 1286142.97 1254953.24
  [3,]     9991 10649.17   21035.93   13977.05       0.00 1289479.20 1295040.50 1263758.70
  [4,] 29823984 10654.64 1268625.67 1280809.90 1289479.20       0.00   27399.00   30229.96
  [5,]   785748 10654.76 1274133.34 1286142.97 1295040.50   27399.00       0.00   33043.67
  [6,] 29824531 10659.36 1242871.98 1254953.24 1263758.70   30229.96   33043.67       0.00
  </code></pre>
  <p>I want to change the</p>
  <pre><code>[,1] to &quot;Seller&quot;
  [,2] to &quot;DC&quot;
  [,3] to [,8] to the values of column.
  </code></pre>
  <p>How to do I do that?</p>