Hi there: 
   
  I'd thought these two versions of noncentral t-distribution are essentially the same: 
  > qqplot(rt(1000,df=20,ncp=3),qt(runif(1000),df=20,ncp=3))

  But, the scales of the x-axis and the y-axis are quite different according to the QQ-plot. 
   
  Did I make any mistakes somewhere? 
   
   
  Thanks, 
  Long
   

 		
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