title: Importing only every Nth row from a .csv file in R
body: <p>just a quick question. Is there a way to use read.csv to import every Nth row from a large file: </p>
  
  <p>Example, a 50-60 million line file where you only need every 4th row starting at row 2. </p>
  
  <p>I thought about maybe incorporating the 'seq' function, but I am not sure if that is possible.</p>
  
  <p>Any suggestions?  </p>