title: Create object with R
body: <pre><code> num [1:300, 1] 0.7 -1 0.6 0.9 0.5 ...
   - attr(*, "dimnames")=List of 2
    ..$ : chr [1:300] "G1" "G2" "G3" "G4" ...
    ..$ : NULL
  </code></pre>
  
  <p>How can I create an object with this structure using R?</p>