title: Plot not defined with Julia
body: <p>I compiled Julia 0.1 from the source code on my Ubuntu 12.04. It is my first time try with Julia actually.</p>
  
  <p>The compilation got through to the end with no problem but some warnings.</p>
  
  <p>When I try to execute the plot command , here comes the problem, </p>
  
  <pre><code>    julia&gt; plot(x-&gt;sin(x^2)/x, -2pi,2pi)
      ERROR: plot not defined
  </code></pre>
  
  <p>Did the compilation go wrong somewhere or Do I have to install extra package to plot in Julia?
  Thanks</p>