Gri is a language for scientific graphics applications. By 'language'
I mean that it is a command-driven application, as opposed to a
click/point application. It is analogous to latex or tex, and shares
the property that extensive power is the reward for tolerating a
learning curve. Gri output is in PostScript, suitable for
incorporation in documents prepared by various text processors.
Gri can make x-y graphs, contour-graphs, and image graphs. In
addition to high-level capabilities, it has enough low-level
capabilities to allow users to achieve a high degree of customization.
Control is extended to all aspects of drawing, including
line widths, colors, and fonts. Text includes a subset of the tex
language for letters and mathematical symbols in labels.
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