PAN Blend small-angle-scattering packages

Fityk is a flexible and portable program for nonlinear fitting of analytical functions (especially peak-shaped) to data (usually experimental data). In other words, for nonlinear peak separation and analysis.

It was developed for analyzing diffraction patterns, but can be also used in other fields, since concepts and operations specific for crystallography are separated from the rest of the program.

Fityk offers various nonlinear fitting methods, subtracting background, calibrating data, easy placement of peaks and changing peak parameters, automation of common tasks with scripts, and much more. The main advantage of the program is flexibility - parameters of peaks can be arbitrarily bound to each other, eg. the width of a peak can be an independent variable, can be the same as the width of another peak or can be given by a complicated - common to all peaks - formula.

libjs-sphinxdoc is necessary for the Javascript stuff in the documentation.

PyFAI is a Python library for azimuthal integration; it allows the conversion of diffraction images taken with 2D detectors like CCD cameras into X-Ray powder patterns that can be used by other software like Rietveld refinement tools (i.e. FullProf), phase analysis or texture analysis.

As PyFAI is a library, its main goal is to be integrated in other tools like PyMca, LiMa or EDNA. To perform online data analysis, the precise description of the experimental setup has to be known. This is the reason why PyFAI includes geometry optimization code working on "powder rings" of reference samples. Alternatively, PyFAI can also import geometries fitted with other tools like Fit2D.

PyFAI has been designed to work with any kind of detector with any geometry (transmission, reflection, off-axis, ...). It uses the Python library FabIO to read most images taken by diffractometer.

SasView is software for the analysis of Small-Angle Scattering (SAS) data.

It fits analytic functions describing different types of material microstructure to experimental data in order to determine the shape, size and degree of ordering.

SasView also includes tools for calculating scattering length densities, slit sizes, resolution, fringe thicknesses/d-spacings, the (Porod) invariant ('total scattering'), and distance distribution functions.

SasView is a Small Angle Scattering Analysis Software Package, originally developed as part of the NSF DANSE project under the name SansView, now managed by an international collaboration of facilities.

This package installs the sasview executable script.

SPD stands for SPatial Distortion. Written in C language, this command-line driven program deals with images coming from X-ray diffusion/diffraction experiments. It does subsequently:

 *intensity corrections (dark current, flat field correction, ...),
 *geometry corrections using spline files or a pair of distortion arrays,
 *azimuthal integration in 2D or 1D after maskin defective pixels.
SPD was originally written by Jorg Klora for ESRF and was re-written by Peter

Boesecke. Maintenance and packaging of the program are provided by Rainer Wilcke and Jerome Kieffer from software group at ESRF.