title: Auto-scale setting the window too small GNUPLOT
body: <p>I have this code:</p>
  
  <pre><code>set title "Ex1.txt"
  set key title "Legenda"
  set key inside right top vertical Right reverse enhanced autotitle box opaque
  set key noinvert samplen 1 spacing 1 width 0 height 0
  set style fill  transparent solid 0.50 noborder
  set parametric
  set trange[0:]
  set xrange[0:]
  set yrange[0:]
  set grid
  set terminal pngcairo
  set output 'ev.png'
  plot [0:][0:] t, -2.0*t+(2000.0) with filledcurves x1, t, -0.6666666666666666*t+(1333.3333333333333) with filledcurves x1, t, -0.8333333333333334*t+(0.0),t, -0.8333333333333334*t+(1333.3333333333333),t, -0.8333333333333334*t+(1416.6666666666667),
  unset output
  unset terminal
  unset parametric
  exit
  </code></pre>
  
  <p>But when I run this script the windows, in the x "range", goes from 0 to 5. It really is supposed to start at zero but if it goes only until 5 I can barely distinguish the lines.
  Here you can see the output of the code as it is:
  <a href="https://i.stack.imgur.com/m4rPc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/m4rPc.png" alt="enter image description here"></a></p>
  
  <p>If I change the x scale to [0:700] it goes like this:
  <a href="https://i.stack.imgur.com/I0KbR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/I0KbR.png" alt="enter image description here"></a></p>
  
  <p>As you can see much better because we can distinguish all lines. The problem is that I can't specify the maximum range because the equations might be different, because this is an output of a java program that I have, for example in this case 700 works but in another exercise the optimal value could be 300. Is there a way to make the gnuplot to know the max range of the x axis without the autoscale as it is (because it stops at x=5)?</p>
  
  <p>Thanks in advance</p>