Here is some software and other links for doing vector field visualization.

  * [[http://www.scipy.org/Cookbook/LineIntegralConvolution]] - Scipy cookbook entry for line integral convolution.  This uses Cython!
  * [[http://www.cg.tuwien.ac.at/research/vis/dynsys/frolic/]] - Fast approximate line integral convolution and oriented line integral convolution. This is from 1997 (read the paper on the linked page).
  * [[http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.90.7638]] A overview summary article
  * [[http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.5.6235]] Another recent summary article
  * [[http://facstaff.l3.drake.edu/turness/research.html]] Tim Urness, who did his PhD work in vector field visualization.