* [[http://www.gnuplot.info/faq/index.html|gnuplot FAQ]]
  * [[https://www.cs.hmc.edu/~vrable/gnuplot/using-gnuplot.html|Using gnuplot]]
  * [[http://www.gnuplotting.org/plotting-data/|gnuplotting]]
  * [[http://gnuplot.sourceforge.net/demo_5.0/datastrings.html|demo printing values on top of the histogram columns]]
  * [[http://galileo.phys.virginia.edu/compfac/courses/geek-hours/gnuplot.html]]loads of complex graph forms (physics)
  * [[http://gnuplot.sourceforge.net/demo/|gnuplot demo index on sourceforge]]
  * [[http://gnuplot.sourceforge.net/demo/gantt.html|gantt chart demo]]
  * [[http://www.ibm.com/developerworks/aix/library/au-gnuplot/#listing2|plot of 'sar' output - ibm.com]]
==== Treat x axis as date/time (epoch) ====
<code>
set xdata time
set timefmt "%s"
  -  set xtics 3600
set format x "%H:%M:%S" # or whatever
plot ...
</code>