title: Gnuplot animations, Nbodies solver
body: <p>I was searching for this for few hours, bud didnt manage to find anything really useful to make everything work.</p>
  
  <p>So ive got a txt file with data.  </p>
  
  <pre><code>x1 y1 z1
  x2 y2 z2
  x3 y3 z3
  
  x1' y1' z1'
  x2' y2' z2'
  x3' y3' z3'
  
  x1'' y1'' z1''
  x2'' y2'' z2''
  x3'' y3'' z3''
  
  .
  .
  .
  x1^n y1^n z1^n
  x2^n y2^n z2^n
  x3^n y3^n z3^n
  </code></pre>
  
  <p>That means ive got 3 planets with 3d position each. After time step h planet 1(x1,y1,z1) moves to (x1',y1',z1').</p>
  
  <p>How to visualisate that animation in GNUplot? Ive got N time steps and K bodies.</p>
  
  <p>Thank You for any help.</p>