title: Grouping of rows in R
body: <p>I am new to R and have a requirement as below.<br>
  I have a data frame as below, </p>
  
  <pre><code>    Date  Name
  1 11/17/2014 A
  2 11/17/2014 B
  3 11/17/2014 C
  4 11/18/2014 D
  5 11/18/2014 A
  6 11/18/2014 B
  7 11/19/2014 E
  8 11/19/2014 F
  9 11/19/2014 G
  </code></pre>
  
  <p>Now, I want the output as below </p>
  
  <pre><code>11/17/2014  11/18/2014 11/19/2014
  A             D           E
  B             A           F 
  C             B           G 
  </code></pre>