Frida is a command-line program for interactive analysis of neutron and X-ray scattering data: exploration, manipulation, visualisation, and curve fitting.

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Getting started

Introduction	What Frida does and how it is structured
Installation	Build and install on Linux, macOS, or Windows
Tutorial	Step-by-step sessions, from calculator to convolution fitting

Reference

Data model	Structure of data and curve files
Expressions	Expression syntax and variable references
Commands	Complete command listing
Built-in functions	Mathematical functions
Curves & fitting	Defining and fitting parametric models

Other

Graphics & PostScript	Screen plotting and publication-quality PostScript figures
Configuration	Local setup via frida.ini
About	Status, citation, contact