sci
Gri is a language for scientific graphics programming. The word
"language" is important: Gri is command-driven, not
point/click. Some users liken Gri to LaTeX, since both provide
extensive power in exchange for patience in learning syntax. Gri can
make x-y graphs, contour graphs, and image graphs, in PostScript and
(someday) SVG formats. Control is provided over all aspects of
drawing, e.g. line widths, colors, and fonts. A TeX-like syntax
provides common mathematical symbols.