title: How to read in numbers with a comma as decimal separator?
body: <p>I have a series of CSV files where numbers are formatted in the european style using commas instead of decimal points, i.e. <code>0,5</code> instead of <code>0.5</code>.</p>
  
  <p>There are too many of these files to edit them before importing to R. I was hoping there is an easy parameter for the <code>read.csv()</code> function, or a method to apply to the extracted dataset in order for R to treat the data as a number rather than a string.</p>