title: Interpolating graph in gnuplot
body: <p>Im trying to plot a graph in gnu plot using this command</p>
  
  <pre><code>    plot 'temp.txt' using 1:3 title 'humidity' with lines smooth csplines,
  
     'temp.txt' using 1:2 title'temprature' with lines smooth splines
  </code></pre>
  
  <p>but the curves are not smooth enough as you can see in the image <a href="https://i.stack.imgur.com/c8hAt.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/c8hAt.png" alt="enter image description here"></a></p>
  
  <p>I want the curves to be more smooth by interpolating the existing data. </p>