Sonsivri

IGOR Pro 6 is an extraordinarily powerful and extensible scientific
graphing, data analysis, image processing and programming software
tool for scientists and engineers.

(http://www.wavemetrics.com/products/igorpro/creatinggraphs/3dandvolume/surfacepix/filledpluscontour.jpg)

(http://www.wavemetrics.com/products/igorpro/creatinggraphs/2dgraphspix/MonsterGraphEmbedded.png)

IGOR Pro is an interactive software environment for experimentation
with scientific and engineering data and for the production of
publication-quality graphs and page layouts. IGOR has been used by
tens of thousands of technical professionals since its introduction
in 1989. Here are a few highlights...

• IGOR Pro produces journal-quality scientific graphs and exports high-
  resolution graphics formats such as Encapsulated PostScript (EPS).
• IGOR Pro handles large data sets very quickly.
• IGOR Pro includes a wide range of capabilities for scientific and
  engineering analysis and graphing.
• IGOR Pro has special support for time-series or other evenly-spaced
  data.
• IGOR Pro includes a powerful suite of image processing operations for
  image filtering, manipulation, and quantification.
• IGOR Pro imports data in many formats, and can acquire data from
  hardware devices.
• IGOR Pro is completely programmable via a built-in programming
  environment, and can be extended by external code (XOPs) written
  in C.
• IGOR Pro doesn't require any programming; most functionality is
  available using standard menus, dialogs, and the mouse.

 http://www.ware8.com/Education/5016.htm (http://www.ware8.com/Education/5016.htm)