Documentation
Reference for ROOT-A-TRON 3000. Each page describes what a control does and the method behind it, so a result can be understood and defended, not just produced. For a guided first run, use the tutorials.
Getting started
What a fit is, how the pages fit together, sessions and saving, the backend.
Data and analysis types
Entering data; per-point, constant and no uncertainties; histograms; multivariate fits.
Fit functions
ROOT expressions, the equation editor and its translation, the model library.
Starting values
Why they matter, how to read them off a plot, and a guide for every library model.
The fit report
Convergence, uncertainties, χ² and NDF, diagnostics, correlations, confidence bands, exclusions.
Uncertainties and Analyze Data
How uncertainties weight a fit, and how calculated quantities propagate them with units.
Saving and exporting
Sessions, images, CSV, PDF and LaTeX reports.
Glossary
The statistical terms used in the report, defined precisely.
Reading order for a first analysis: Getting started → Data and analysis types → Fit functions → Starting values → The fit report.