"Gri is a language for scientific graphics programming." EditByBSEditor: 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.