PAN Blend powder packages

A program that computes structure factors |F^2| for neutrons, x-rays, and electrons from CIF/CFL/SHX/PCR crystallographic descriptions. This is useful to compute the diffraction pattern from materials.

This package contains the executable.

Il s’agit d’un programme pour l’analyse d’images de diffraction de poudre pour rayons X. Il fournit la capacité de calibration, de création de masque, de superposition de motifs et d’affichage de lignes de phase.

Fityk est un programme flexible et portable pour la régression non linéaire de fonctions analytiques (spécialement celles en forme de pic) pour des données (habituellement des données expérimentales) – en d’autres mots pour le tri et l’analyse non linéaire.

Il a été développé pour l’analyse de modèles de diffraction, mais peut être aussi utilisé dans d’autres domaines, car les opérations et les concepts particuliers à la cristallographie sont séparés du reste du programme.

Fityk propose diverses méthodes de régression non linéaire, détection d’arrière-plan, calibration de données, positionnement aisé des pics et modifications de leurs paramètres, automatisation des tâches courantes avec des scripts et bien d’autres choses encore. Le principal avantage de ce programme est sa souplesse – les paramètres des pics peuvent être de manière arbitraire reliés les uns aux autres, par exemple, la largeur d’un pic peut être une variable indépendante, la même que celle d’un autre pic ou peut être donnée par une formule compliquée commune à tous les pics.

Libjs-sphinxdoc est nécessaire pour les éléments en Javascript dans la documentation.

Xylib est une bibliothèque C++ pour lire des données x-y de diffraction poudreuse, de spectroscopie et d’autres méthodes expérimentales.

Ce paquet fournit un petit programme xyconv, convertissant les fichiers pris en charge par la bibliothèque xylib en TSV (valeurs séparées par des tabulations).

FOX est un programme pour la détermination ab initio de structure à partir de la diffraction de poudre (neutrons, rayons X). La structure cristalline peut être décrite comme n’importe quel combinaison d’atomes, molécules ou polyèdres sans a priori d’information à propos des liens de ces « blocs de construction ». Fox peut réaliser des optimisations globales à plusieurs modèles et automatiquement corriger les positions spéciales.

FOX peut être aussi utilisé dans des buts éducatifs pour afficher des structures cristallines en 3D avec le modèle associé de diffraction de poudre.

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.

CodraFT is a generic signal and image processing software based on Python scientific libraries (such as NumPy, SciPy or scikit-image) and Qt graphical user interfaces (thanks to guidata and guiqwt.

CodraFT stands for "CODRA Filtering Tool".

CodraFT is available as a stand-alone application or as an addon to your Python-Qt application thanks to advanced automation and embedding features.

python implementation of the matrix algorithm for computer modeling of X-ray diffraction (XRD) patterns of disordered lamellar structures. It's goals are to:

• provide an easy user-interface for end-users
• provide basic tools for displaying and manipulating XRD patterns
• produce high-quality (publication-grade) figures
• make modelling of XRD patterns for mixed-layer clay minerals 'easy'
• be free and open-source (open box instead of closed box model)

PyXRD was written with the multi-specimen full-profile fitting method in mind. A direct result is the ability to 'share' parameters among similar phases. This allows for instance to have an air-dry and a glycolated illite-smectite share their coherent scattering domain size, but still have different basal spacings and interlayer compositions for the smectite component. Or play with the di/tri-octahedral composition of a chlorite with ease.

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.

GSAS-II is an open source Python project that addresses all types of crystallographic studies, from simple materials through macromolecules, using both powder and single-crystal diffraction and with both x-ray and neutron probes. Measurements can be constant wavelength (or in the future, neutron TOF.) At present, code is being developed for all the various steps in diffraction analysis, such as data reduction, peak analysis, indexing, structure solution and structure refinement.

At present GSAS-II can be used for processing of area detector data, peak fitting, auto-indexing, structure solution, Pawley and Rietveld fitting. Many of the nice features of GSAS are present and some things work much better than in GSAS, but other features are yet to come. At this point only x-rays and constant wavelength neutrons are implemented (no TOF). The GUI is self-documenting with help pages for every GUI page. The code is changing on a regular basis, so expect things to break from time to time and you should 'Update' frequently to stay abrest of new features as they are added.

PyXRD is a python implementation of the matrix algorithm for computer modeling of X-ray diffraction (XRD) patterns of disordered lamellar structures. It's goals are to:

• provide an easy user-interface for end-users
• provide basic tools for displaying and manipulating XRD patterns
• produce high-quality (publication-grade) figures
• make modelling of XRD patterns for mixed-layer clay minerals 'easy'
• be free and open-source (open box instead of closed box model)

PyXRD was written with the multi-specimen full-profile fitting method in mind. A direct result is the ability to 'share' parameters among similar phases. This allows for instance to have an air-dry and a glycolated illite-smectite share their coherent scattering domain size, but still have different basal spacings and interlayer compositions for the smectite component.

Other features are (incomplete list):

• Import/export several common XRD formats (.RD, .RAW, .CPI, ASCII)
• simple background subtraction/addition (linear or custom patterns)
• smoothing patterns and adding noise to patterns
• peak finding and annotating (markers)
• custom line colors, line widths, pattern positions, ...
• goniometer settings (wavelengths, geometry settings, ...)
• specimen settings (sample length, absorption, ...)
• automatic parameter refinement using several algorithms, e.g.:
  • L BFGS B
  • Brute Force
  • Covariation Matrix Adapation Evolutionary Strategy (CMA-ES; using DEAP)
  • Multiple Particle Swarm Optimization (MPSO; using DEAP)
• scripting support