title: How to indicate row.names=1 using fread() in data.table?
body: <p>I want to consider the first column in my <em>.csv</em> file as a sequence of <em>rownames</em>. Usually I used to do the following:</p>
  
  <pre><code>read.csv("example_file.csv", row.names=1)
  </code></pre>
  
  <p>But I want to do this with the <code>fread()</code> function in the <code>data.table</code> R package, as it runs very quickly.</p>