title: Adding ticks to 2 axes of a persp plot
body: <p>I would like to add numeric axes to my persp plot with the following code </p>
  
  <pre><code>persp(F1, phi=30, theta=120, xlab="x", ylab="y", zlab="z", axes=T, ticktype="detailed") 
  </code></pre>
  
  <p>However, I do not want the ticks on the z axis. </p>
  
  <p>How can I remove these ticks whilst preserving the ticks/values on the x &amp; y axes? </p>
  
  <p>Thanks in advance,</p>