title: Remove z axis in gnuplot
body: <p>I have the following gnuplot script: </p>
  
  <pre><code>set xyplane at 0    
  set style line 2 lc rgb 'black' pt 7   # circle
  set border 15
  spl 'N.dat' u 1:2:3:($5/10.) w p ls 2 ps variable noti
  </code></pre>
  
  <p>Where the file <code>N.dat</code> can be found here <a href="http://www.filedropper.com/n_1" rel="nofollow noreferrer">http://www.filedropper.com/n_1</a> .</p>
  
  <p>I want to remove the border parallel to the z-axis that appears on the bottom-right side of the screen, see the following output of the above script:</p>
  
  <p><img src="https://i.stack.imgur.com/iQPiA.png" alt="output with gnuplot 4.6.6"></p>
  
  <p>Note that I am using the command <code>set border 15</code>. The number 15 in base 2 is 000000001111 , i.e. the four digits in the middle are all zero: these digits correspond to the vertical axes in the plot and they are all zero here, thus there should be no vertical axes at all, see <a href="http://gnuplot.sourceforge.net/docs_4.2/node162.html" rel="nofollow noreferrer">http://gnuplot.sourceforge.net/docs_4.2/node162.html</a> . </p>
  
  <p>However, two vertical axes are still there. In particular, you know how to get rid of the bottom-right vertical axis only?</p>