title: if not conditions in R?
body: <p>is there anything like "if not" conditions in R?</p>
  
  <p>easy Example (not working):</p>
  
  <pre><code>fun &lt;- function(x)
  {
  if (!x &gt; 0) {print ("not bigger than zero")}
  }
  
  fun(5)
  </code></pre>