title: Octave smooth curve graph
body: <p>I want to draw a smooth curve fit graph in Octave on my data instead of sharp line just like scatter with smooth line in Excel. </p>
  
  <p>My data as as follows:</p>
  
  <pre><code>x = [1, 2 , 3];
  y = [53, 48, 31];
  y1 = [89, 51, 49];
  </code></pre>
  
  <p>When i do a normal plot it gives linear graph with sharp edges on a point. I want smooth graph. How can i plot that in Octave. Thank you</p>