title: R plot arrow head type and size
body: <p>I am trying to plot an arrow on a base R plot. I would like the arrow head to be a small equilateral triangle. I hoped the <code>arr.type</code> argument of <code>arrows</code> would allow an option for a small arrow, but that doesn't seem to be the case.</p>
  
  <pre><code>arrows(as.Date('1-Feb-15', "%d-%b-%y"), 50, as.Date('1-May-15', "%d-%b-%y"), 50, col = 'dark orange', lwd=5, arr.type = 'simple', arr.width=3)
  </code></pre>
  
  <p>Is there a simple way to make the arrow head small?</p>