title: Rounding numbers in R to specified number of digits
body: <p>I have a problem in rounding numbers in R. I have the following data, and I want to round them to 8 decimal digits.</p>
  
  <pre><code>structure(c(9.50863385275955e-05, 4.05702267762077e-06, 2.78921491976249e-05, 
  8.9107773737659e-05, 5.0672643927135e-06, 5.87776809485182e-05,
  2.76421630542694e-05, 5.51662570625727e-05, 2.52790624570593e-05, 
  2.00407457671806e-05, 8.33373482160056e-05, 7.8297940825207e-05,
  2.00407457671806e-05, 8.33373482160056e-05, 7.8297940825207e-05,
  2.00407457671806e-05, 8.33373482160056e-05, 7.8297940825207e-05
  ), .Names = c("CC/CC", "TT/CC", "CT/CC", "NC/CC", "CC/TT", "TT/TT",
  "CT/TT", "NC/TT", "CC/CT", "TT/CT", "CT/CT", "NC/CT"))
  </code></pre>
  
  <p>These digits are in the form of exponent and I want to convert them to rational numbers with 8 decimal places.</p>