title: How to use floor function in gnuplot
body: <p><a href="https://stackoverflow.com/questions/5130656/plotting-two-functions-with-different-sample-rate">Here</a> the OP defines the functions <code>round</code> with the function <code>floor</code> in <code>gnuplot</code>. Help for <code>floor</code> says:</p>
  
  <pre><code>gnuplot&gt; help floor
   The `floor(x)` function returns the largest integer not greater than its
   argument.  For complex numbers, `floor` returns the largest integer not
   greater than the real part of its argument.
  </code></pre>
  
  <p>How can I use <code>floor</code> I did:</p>
  
  <pre><code>gnuplot&gt; floor(7.3)
           ^
           invalid command
  </code></pre>
  
  <p>Can i somehow alter the number of decimal places to which number will be rounded to?</p>