title: heatmap.2() overwrite colnames
body: <p>I am using the function heatmap.2 in R. I created an heatmap with the following conditions: </p>
  
  <pre><code>heatmap.2(tada1, Rowv=FALSE, Colv="FALSE", dendrogram='none', scale="row",trace='none',col=redgreen(3)) 
  </code></pre>
  
  <p>My problem is that the column of the heatmap contains 596 names. I cant see this names because they are overwriting each other. My Question is therefore: How can i display all the names without overwriting each other?</p>
  
  <p>Thanks!</p>