title: Plot 2D tables as a fence in gnuplot
body: <p>A simple question about gnuplot.
  i have a data represented in a table, that spans further in each direction.  </p>
  
  <pre><code>0   1           2           3           4
  1   1           2.0408830835    2.8180454121    3.9760428593
  2   2.0622871101    3.9709816613    5.7664953944    7.5379858295
  3   3.1861064949    5.7565758609    7.8939354949    9.7787163957
  4   4.0944785549    6.4357145355    9.5787145459    11.6365303155
  5   4.7675231829    6.3181833785    8.8833920556    11.4107253565
  ....
  </code></pre>
  
  <p>I want to plot this as a surface or fence in gnuplot, so that first column represents X, first row represents Y, and data at position {x,y} in the table represents Z, the height of the graph.</p>
  
  <p>Is there a way to do it? 
  Thanks!</p>