pygraph-plotter 0.2.0

OpenGL-based interactive math function plotter

PyGraph Plotter

An OpenGL-powered interactive math function plotter with 2D, 3D surface, parametric surface, and space curve modes.

Install

pip install pygraph-plotter

Launch

pygraph                  # open empty plotter
pygraph "sin(x)"         # pre-load an expression
pygraph "x**2 - 2*x"
python -m pygraph

Features

• 2D equations — plot any expression in x with live pan/zoom
• 3D surfaces — f(x, y) rendered with OpenGL shading and 9 colormaps
• Parametric surfaces — (x(u,v), y(u,v), z(u,v))
• Space curves — 3D parametric curves with tube rendering
• Data files — load CSV/TSV as scatter, line, histogram, KDE, heatmap, or violin plot
• Multi-curve overlay — up to 8 equations plotted simultaneously in 2D
• Animation — use t in your expression and press Play (sin(x - t))
• Log-scale axes — toggle Log X / Log Y independently
• Zoom-to-fit — auto-scale viewport to the curve's Y range
• Cursor readout — hover shows live x/y coordinates
• Pinned points — double-click to drop coordinate markers
• Zoom box — Shift+drag to rubber-band zoom a region
• Dark mode — toggle in the panel
• Save PNG — Ctrl+S or button; copy to clipboard in one click
• Session persistence — last state restored on relaunch
• Equation history — recent expressions listed for quick reuse

Keyboard Shortcuts

Key	Action
Scroll	Zoom in/out
Left drag	Pan
Shift + drag	Zoom box
Double-click	Pin coordinate marker
R	Reset / zoom to fit
Space	Play / pause animation
Ctrl+S	Save screenshot
?	Show shortcut help

Requirements

• Python ≥ 3.10
• OpenGL 3.3-capable GPU

Dependencies installed automatically: PyOpenGL, imgui_bundle, numpy, sympy, Pillow.

License

MIT