Plot and analyze your own lab data in the browser. Import a CSV or paste a table, choose the x and y columns, drag across the graph to select a range, fit a model to the points in that range, and read the parameters, their uncertainties and the residuals. Nothing is uploaded: the data stays in the page.
- Import a CSV file (picker or drag-and-drop) or paste cells from a spreadsheet; comma, tab and semicolon delimiters, decimal commas, units read from headers such as
Time (s) - Editable data table; rows used by the fit are marked
- Select a range of x by dragging on the graph, moving its edges with the pointer or keyboard, or typing the bounds
- Proportional, linear and quadratic least-squares fits with parameter uncertainties, units, RMSE and R²
- Residual graph on the same x axis
- Zoom with the wheel or a pinch, pan by dragging an axis, and return with Auto scale; zooming never changes a fit
- Export a CSV with
in_fit,fit_valueandresidualcolumns; copy the fit results as text - Bundled sample dataset: a cart that speeds up on a ramp and then coasts on a level track
- Fit engine checked against NIST Statistical Reference Datasets
- English, Spanish, and French; default and projector color profiles; installable and usable offline
npm install
npm run icons # generate PNG icons from public/icons/icon.svg
npm start # dev server → http://localhost:5173| Command | Description |
|---|---|
npm start / npm run dev |
Start Vite dev server |
npm run build |
Type-check + production build → dist/ |
npm run preview |
Preview the production build locally |
npm test |
Run Vitest unit tests (includes memory-leak suite) |
npm run test:fuzz |
Optional Playwright fuzz smoke: pointer (?fuzz) + keyboard (?fuzzBoard), with ?ea, 30s each |
npm run test:fuzz -- 90 |
Same fuzz for 90 seconds (--duration 90 or FUZZ_DURATION=90 also work) |
npm run test:fuzz:quick |
Shorter fuzz smoke (10s) |
npm run test:fuzz:long |
Longer fuzz smoke (300s) |
npm run check |
TypeScript type check |
npm run lint |
Biome lint check |
npm run format |
Auto-format all files |
npm run fix |
Lint + auto-fix |
npm run icons |
Regenerate PNG icons from public/icons/icon.svg |
npm run release |
check && lint && build && test, then version patch + push tags |
npm run clean |
Remove dist/ |
npx playwright test tests/browser |
End-to-end workflow tests in Chromium |
node scripts/generate-sample.ts |
Rewrite the bundled sample dataset |
New sims start at version: "0.0.0" in package.json. Bump only when cutting a release (for example npm version patch and a matching git tag). Keep name in kebab-case; it is separate from the SceneryStack sim identifier in src/init.ts, which reads its version from package.json.
| Tool | Version | Purpose |
|---|---|---|
| SceneryStack | ^3.0.0 | Simulation framework |
| Vite | ^8 | Build tool + dev server |
| TypeScript | ^7 | Type-safe JavaScript |
| Biome | ^2.5 | Linting + formatting |
| vite-plugin-pwa | ^2 | PWA + service worker |
GNU Affero General Public License v3.0 — see OpenLyceum org license.
See OpenLyceum contributing guidelines. Report bugs via GitHub Issues; use org issue templates.