title: Change x-axis in violin plot in R
body: <p>I am trying to change the values in the x-axis of vioplot. I used a suggestion and wrote:   </p>
  
  <pre><code>library(vioplot)  
  labels=c(10,20,30)  
  x1=c(1,2,3,4)  
  x2=c(5,6,7,8,9,10)  
  x3=c(11,12,13,14,15,16)  
  x=list(x1,x2,x3)  
  do.call(what = vioplot, args = x)  
  axis(side=1,at=1:length(labels),labels=labels)  
  </code></pre>
  
  <p>But it seems that the values in the a-axis are added to 1-2-3 which I don't want to be presented.   </p>
  
  <p>thank you </p>