gnuplot 4.2.0-3 (i386 binary) in ubuntu hardy

 Package for making 2D and 3D graphs from data and functions.
 Supports lots of output formats, including drivers for many printers,
 (La)TeX, (x)fig, Postscript, and so on. The X11-output is packaged in
 gnuplot-x11.
 .
 Data files and self-defined functions can be manipulated by internal
 C-like language. Can perform smoothing, spline-fitting, or nonlinear
 fits. Can work with complex numbers.
 .
 This package is for transition and to install a full-featured gnuplot
 supporting the X11-output. If you want to skip the
 X-windows-dependency (e.g. if you're running a small server) just
 install "gnuplot-nox" and skip this meta-package.
 .
  Homepage: http://gnuplot.sourceforge.net/