title: Monitoring R data loading progress when using read.table
body: <p>I've found a lot of answers for other types of data loading, but none for showing progress when R is reading data using <code>read.table(...)</code>. I've got a simple command: </p>
  
  <pre><code>data = read.table(file=filename,
                  sep="\t",
                  col.names=c("time","id","x","y"),
                  colClasses=c("integer","NULL","NULL","NULL"))
  </code></pre>
  
  <p>This loads a large amount of data in about 30 seconds or so, but a progress bar would be really nice :-D</p>