title: r chord-diagram circlize --> rotating names
body: <p>I am writing because I would like to get some help with a plot in R, using the package circlize, please.</p>
  
  <p>I am trying to make a chord diagram, and I could make it, but the names on the plot are overlapped, </p>
  
  <p><a href="https://i.stack.imgur.com/d2cGD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/d2cGD.png" alt="enter image description here"></a></p>
  
  <p>then I tried with a code that I picked up from:
  and I got the same plot, but with the names repeated, and overlapped on each other <a href="https://i.stack.imgur.com/UEk1f.png" rel="nofollow noreferrer">enter image description here</a></p>
  
  <p>the code that I am using for my plot is</p>
  
  <pre><code>chordDiagram(as.matrix(naxo2)
           ,grid.border = 1,
           grid.col = NULL,
           transparency = 0.5,
           preAllocateTracks = 0)
  </code></pre>
  
  <p>and the data frame already has the names included in the matrix that I am using.</p>
  
  <p>what I would like to get is a plot in which the names appear in a 90 degrees to avoid the overlapping.</p>
  
  <p>Any help is very welcome, and thanks in advance!</p>
  
  <p>PS: I also tried the another solution that was posted here, but I did not work for me (<a href="https://stackoverflow.com/questions/32424421/r-adjusting-labels-in-circlize-diagram?noredirect=1&amp;lq=1">R: Adjusting Labels in circlize diagram</a>)</p>