Gri graphical language

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{{Infobox software

|name = Gri

|logo =

|screenshot = Image:gri-logo.svg

|caption =

|collapsible =

|author = Dan Kelley and Peter Galbraith

|developer =

|released =

|latest release version = 2.12.22

|latest release date = {{Start date and age|2010|11|29}}

|latest preview version =

|latest preview date =

|programming language =

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|license = GNU General Public License

|website = [http://gri.sourceforge.net/ gri.sourceforge.net]

}}

Gri is a programming language for creating scientific graphics.{{Cite web |title=Gri: introduction |url=http://kestrel.nmt.edu/~raymond/software/gri/Introduction.html |access-date=2023-09-04 |website=kestrel.nmt.edu}} It is licensed under the terms of the GNU General Public License.

Some users consider Gri similar to LaTeX, since both provide extensive power as a reward for tolerating a learning curve.

Gri can make x-y graphs, contour graphs, and image graphs, outputting the results in PostScript format. Control is provided over all aspects of drawing, e.g. line widths, colors, and fonts. A limited TeX-like syntax provides common mathematical symbols.{{Cite web |title=Ubuntu Manpage: gri - scientific graphics language |url=https://manpages.ubuntu.com/manpages/xenial/man1/gri.1.html |access-date=2023-09-04 |website=manpages.ubuntu.com}}

An example Gri program:

open file.dat

read columns x y

draw curve