History
Several utilities were inspired by Unix plotting utilities. A graph utility and various plot filters were present in the first releases of Unix from Bell Laboratories. By the time of Version 7 Unix, `graph', `plot', `spline', and several device-dependent versions of `libplot' were a standard Unix features. The first display device supported by the package was a Tektronix 611 storage scope. By the early 1980s, numerous other devices were supported.
In 1989, the first GNU versions of `graph', `plot', `tek2plot', `spline' and their respective documentation were written. Richard Stallman further directed development of the programs and documentation. The distribution, as it stood in 1991, was distributed under the name `GNU graphics'.
In 1995 the package was significantly expanded by writing a device-independent, standalone version of `libplot', and by rewriting `graph' from scratch, turning it into a real-time filter.
Read more about this topic: Plotutils
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