title: R converting text to double precision
body: <p>How do I retain the full 16 digit precision when coercing a text to numeric in R?
  My attempt below does not appear to do this...</p>
  
  <pre><code>x&lt;-"0.501288104715059"
  x&lt;-as.double(x)
  x
  [1] 0.5012881
  </code></pre>
  
  <p>[Note this is similar to a previously asked question using as.numeric to convert a character to number but his question refers to the case of using as.double to convert a character to a number]</p>