Graphest

A graphing calculator that faithfully plots arbitrary mathematical relations.

Getting Started

1. 📦 Download the app available for both macOS and Windows.
2. 🎉 Copy and paste some of the example relations, and voilà!

Features

• Plots arbitrary equations/inequalities
• Never gives an incorrect result; if you find any relation plotted incorrectly, please report it here
• Cartesian and polar coordinates
• Parametric relations
• Full interactivity
• Extensive set of mathematical functions

Building from Source

Algorithm

Graphest aims to provide a modern, open-source and extensible alternative to GrafEq™ [Ped].

The following algorithms in [Tup01] are implemented: 1.1–3.2, 3.3 (partially), 3.4.1–3.4.3, 3.4.5 (partially), 3.4.6 (partially).

• [Ped] Pedagoguery Software Inc. GrafEq™. http://www.peda.com/grafeq
• [Tup96] Jeffrey Allen Tupper. Graphing Equations with Generalized Interval Arithmetic. Master's thesis, University of Toronto, 1996. http://www.dgp.toronto.edu/~mooncake/thesis.pdf
• [Tup01] Jeff Tupper. Reliable Two-Dimensional Graphing Methods for Mathematical Formulae with Two Free Variables. SIGGRAPH 2001 Conference Proceedings, 2001. http://www.dgp.toronto.edu/~mooncake/papers/SIGGRAPH2001_Tupper.pdf