Debian Science Nanoscale Physics packages

ABINIT is a package whose main program allows one to find the total energy, charge density and electronic structure of systems made of electrons and nuclei (molecules and periodic solids) within Density Functional Theory (DFT), using pseudopotentials and a planewave basis.

ABINIT also includes options to optimize the geometry according to the DFT forces and stresses, or to perform molecular dynamics simulations using these forces, or to generate dynamical matrices, Born effective charges, and dielectric tensors. Excited states can be computed within the Time-Dependent Density Functional Theory (for molecules), or within Many-Body Perturbation Theory (the GW approximation). In addition to the main ABINIT code, different utility programs are provided.

This package contains the executables needed to perform calculations (however, pseudopotentials are not supplied). For a set of pseudopotentials, install the abinit-data package.

ASE is an Atomic Simulation Environment written in the Python programming language with the aim of setting up, stearing, and analyzing atomic simulations. ASE is part of CAMPOS, the CAMP Open Source project.

ASE contains Python interfaces to several different electronic structure codes including Abinit, Asap, Dacapo, Elk, GPAW and SIESTA.

This package provides the executable scripts.

Avogadro is a molecular graphics and modelling system targeted at molecules and biomolecules. It can visualize properties like molecular orbitals or electrostatic potentials and features an intuitive molecular builder.

Features include:

• Molecular modeller with automatic force-field based geometry optimization
• Molecular Mechanics including constraints and conformer searches
• Visualization of molecular orbitals and general isosurfaces
• Visualization of vibrations and plotting of vibrational spectra
• Support for crystallographic unit cells
• Input generation for the Gaussian, GAMESS and MOLPRO quantum chemistry packages
• Flexible plugin architecture and Python scripting

File formats Avogadro can read include PDB, XYZ, CML, CIF, Molden, as well as Gaussian, GAMESS and MOLPRO output.

BINoculars is a tool for data reduction and analysis of large sets of surface diffraction data that have been acquired with a two-dimensional X-ray detector. The intensity of each pixel of a two-dimensional detector is projected onto a three-dimensional grid in reciprocal-lattice coordinates using a binning algorithm. This allows for fast acquisition and processing of high-resolution data sets and results in a significant reduction of the size of the data set. The subsequent analysis then proceeds in reciprocal space. It has evolved from the specific needs of the ID03 beamline at the ESRF, but it has a modular design and can be easily adjusted and extended to work with data from other beamlines or from other measurement techniques.

CBFlib is a library of ANSI-C functions providing a simple mechanism for accessing Crystallographic Binary Files (CBF files) and Image-supporting CIF (imgCIF) files.

This package contains various utility programs.

The CIF API provides a standard C interface for reading, writing, and manipulating Crystallographic Information Files (CIFs). It is targeted in particular at CIF 2.0, but it provides support for CIF 1.1 and earlier as well.

This package contains cif_linguist, an experimental program for converting data between various versions of the CIF format.

cod-tools is a set of Perl modules and command line tools for manipulating Crystallographic Information Format (CIF) v1.1 and v2.0 files.

CP2K is a program to perform simulations of solid state, liquid, molecular and biological systems. It is especially aimed at massively parallel and linear scaling electronic structure methods and state-of-the-art ab-initio molecular dynamics (AIMD) simulations.

CP2K is optimized for the mixed Gaussian and Plane-Waves (GPW) method based on pseudopotentials, but is able to run all-electron or pure plane-wave/Gaussian calculations as well. Features include:

Ab-initio Electronic Structure Theory Methods using the QUICKSTEP module:

• Density-Functional Theory (DFT) energies and forces
• Hartree-Fock (HF) energies and forces
• Moeller-Plesset 2nd order perturbation theory (MP2) energies and forces
• Random Phase Approximation (RPA) energies
• Gas phase or Periodic boundary conditions (PBC)
• Basis sets include various standard Gaussian-Type Orbitals (GTOs), Pseudo- potential plane-waves (PW), and a mixed Gaussian and (augmented) plane wave approach (GPW/GAPW)
• Norm-conserving, seperable Goedecker-Teter-Hutter (GTH) and non-linear core corrected (NLCC) pseudopotentials, or all-electron calculations
• Local Density Approximation (LDA) XC functionals including SVWN3, SVWN5, PW92 and PADE
• Gradient-corrected (GGA) XC functionals including BLYP, BP86, PW91, PBE and HCTH120 as well as the meta-GGA XC functional TPSS
• Hybrid XC functionals with exact Hartree-Fock Exchange (HFX) including B3LYP, PBE0 and MCY3
• Double-hybrid XC functionals including B2PLYP and B2GPPLYP
• Additional XC functionals via LibXC
• Dispersion corrections via DFT-D2 and DFT-D3 pair-potential models
• Non-local van der Waals corrections for XC functionals including B88-vdW, PBE-vdW and B97X-D
• DFT+U (Hubbard) correction
• Density-Fitting for DFT via Bloechl or Density Derived Atomic Point Charges (DDAPC) charges, for HFX via Auxiliary Density Matrix Methods (ADMM) and for MP2/RPA via Resolution-of-identity (RI)
• Sparse matrix and prescreening techniques for linear-scaling Kohn-Sham (KS) matrix computation
• Orbital Transformation (OT) or Direct Inversion of the iterative subspace (DIIS) self-consistent field (SCF) minimizer
• Local Resolution-of-Identity Projector Augmented Wave method (LRIGPW)
• Absolutely Localized Molecular Orbitals SCF (ALMO-SCF) energies for linear scaling of molecular systems
• Excited states via time-dependent density-functional perturbation theory (TDDFPT)

Ab-initio Molecular Dynamics:

• Born-Oppenheimer Molecular Dynamics (BOMD)
• Ehrenfest Molecular Dynamics (EMD)
• PS extrapolation of initial wavefunction
• Time-reversible Always Stable Predictor-Corrector (ASPC) integrator
• Approximate Car-Parrinello like Langevin Born-Oppenheimer Molecular Dynamics (Second-Generation Car-Parrinello Molecular Dynamics (SGCP))

Mixed quantum-classical (QM/MM) simulations:

• Real-space multigrid approach for the evaluation of the Coulomb interactions between the QM and the MM part
• Linear-scaling electrostatic coupling treating of periodic boundary conditions
• Adaptive QM/MM

Further Features include:

• Single-point energies, geometry optimizations and frequency calculations
• Several nudged-elastic band (NEB) algorithms (B-NEB, IT-NEB, CI-NEB, D-NEB) for minimum energy path (MEP) calculations
• Global optimization of geometries
• Solvation via the Self-Consistent Continuum Solvation (SCCS) model
• Semi-Empirical calculations including the AM1, RM1, PM3, MNDO, MNDO-d, PNNL and PM6 parametrizations, density-functional tight-binding (DFTB) and self-consistent-polarization tight-binding (SCP-TB), with or without periodic boundary conditions
• Classical Molecular Dynamics (MD) simulations in microcanonical ensemble (NVE) or canonical ensmble (NVT) with Nose-Hover and canonical sampling through velocity rescaling (CSVR) thermostats
• Metadynamics including well-tempered Metadynamics for Free Energy calculations
• Classical Force-Field (MM) simulations
• Monte-Carlo (MC) KS-DFT simulations
• Static (e.g. spectra) and dynamical (e.g. diffusion) properties
• ATOM code for pseudopotential generation
• Integrated molecular basis set optimization

CP2K does not implement conventional Car-Parrinello Molecular Dynamics (CPMD).

DRAWxtl reads a basic description of the crystal structure, which includes unit-cell parameters, space group, atomic coordinates, thermal parameters or a Fourier map, and outputs a geometry object that contains polyhedra, planes, lone-pair cones, spheres or ellipsoids, bonds, iso-surface Fourier contours and the unit-cell boundary.

Four forms of graphics are produced:

• an OpenGL window for immediate viewing
• the Persistence of Vision Ray Tracer (POV-RAY) scene language for publication-quality drawings
• the Virtual Reality Modeling Language (VRML) for dissemination across the Internet
• a Postscript rendering of the OpenGL window for those who want high-quality output but do not have POV-RAY installed.

File formats DRAWxtl can read include CIF, FDAT, FullProf (pcr), GSAS, SCHAKAL, SHELX, DISCUS and WIEN2k.

The European Theoretical Spectroscopy Facility (ETSF) is a European network dedicated to providing support and services for ongoing research in academic, government and industrial laboratories.

The ETSF is divided into 7 beamlines, each of which is concerned with a specific scientific topic:

• Optics ;
• Energy Loss Spectroscopy ;
• Quantum Transport ;
• Time-resolved Spectroscopy ;
• Photo-emission Spectroscopy ;
• Vibrational Spectroscopy ;
• X-Rays Spectroscopy.

To allow the adoption of its recommendations about standardization, the ETSF proposes different libraries and tools implementing or using these specifications, as well as widely usable pieces of software.

ETSF_IO is a library of F90 routines to read/write the ETSF file format. This package contains the user tools to:

• check file conformance to the specifications;
• extract data from files;
• merge multiple files from parallel runs, as specified in the specifications.

FeynMF is a LaTeX package for easy drawing of professional-quality Feynman diagrams, illustrations that depict the fundamental interactions of subatomic particles. The diagrams may be created using either the Metafont or MetaPost programs. FeynMF lays out most diagrams satisfactorily from the structure of the graph without any need for manual intervention. Nevertheless all the power of Metafont or MetaPost is available for more obscure cases.

Note that you will need the texlive-metapost package in order to use the MetaPost-based version of FeynMF.

Finalcif is a full-featured CIF file editor to make editing and validation of CIF files easy. It collects all the information from a work folder needed in order to finalize a CIF file for publication. In any case, one can also import a valid CIF file to complete the information. In ideal cases, it takes one click to have a publication-ready file.

Essentially, one should have the corresponding CIF file for FinalCif in its original 'work' folder, which contains all other files such as SAINT list files, SADABS list file, SHELX list files, etc. that led to this CIF file.

Checking the final CIF file with the IUCr CheckCIF server is a one-click problem in FinalCif. One gets a web and PDF report or just a local PLATON CIF check for computers without internet.

FinalCif generates beautiful CIF reports in seconds for publication as MS Word files (also compatible with Openoffice etc.). The report includes tables of structure properties like R-values or atom parameters and a report text about the experiment conditions.

The button "save cif file" saves the current file under 'name'-finalcif.cif. FinalCif will never make changes to the original CIF file.

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.

Garlic is written for the investigation of membrane proteins. It may be used to visualize other proteins, as well as some geometric objects. This version of garlic recognizes PDB format version 2.1. Garlic may also be used to analyze protein sequences.

It only depends on the X libraries, no other libraries are needed.

Features include:

• The slab position and thickness are visible in a small window.
• Atomic bonds as well as atoms are treated as independent drawable objects.
• The atomic and bond colors depend on position. Five mapping modes are available (as for slab).
• Capable to display stereo image.
• Capable to display other geometric objects, like membrane.
• Atomic information is available for atom covered by the mouse pointer. No click required, just move the mouse pointer over the structure!
• Capable to load more than one structure.
• Capable to draw Ramachandran plot, helical wheel, Venn diagram, averaged hydrophobicity and hydrophobic moment plot.
• The command prompt is available at the bottom of the main window. It is able to display one error message and one command string.

A GTK+ based program for the display and manipulation of isolated molecules, periodic systems and crystalline habits. It is in development, but is nonetheless fairly functional. It has the following features:

• Support for several file types (CIF, BIOSYM, XYZ, XTL, MARVIN, and GULP)
• A simple molecular creation and manipulation tool
• A dialogue for creating starting configurations for molecular dynamics simulations
• Assorted tools for visualization (geometry information, region highlighting, etc.)
• Animation of BIOSYM files (also rendered animations, see below)

GDIS also allows you to perform the following functions through other packages:

• Model rendering (courtesy of POVRay)
• Energy minimization (courtesy of GULP)
• Morphology calculation (courtesy of cdd)
• Space group processing (courtesy of SgInfo)
• View the Periodic Table (courtesy of GPeriodic)
• Load additional filetypes, such as PDB (courtesy of Babel)

GGobi is an open source visualization program for exploring high-dimensional data. It provides highly dynamic and interactive graphics such as tours, as well as familiar graphics such as the scatterplot, barchart and parallel coordinates plots. Plots are interactive and linked with brushing and identification.

See http://www.ggobi.org for more information.

Ghemical is a computational chemistry software package written in C++. It has a graphical user interface and it supports both quantum- mechanics (semi-empirical) models and molecular mechanics models. Geometry optimization, molecular dynamics and a large set of visualization tools using OpenGL are currently available.

Ghemical relies on external code to provide the quantum-mechanical calculations. Semi-empirical methods MNDO, MINDO/3, AM1 and PM3 come from the MOPAC7 package (Public Domain), and are included in the package. The MPQC package is used to provide ab initio methods: the methods based on Hartree-Fock theory are currently supported with basis sets ranging from STO-3G to 6-31G**.

Gnuplot is a portable command-line driven interactive data and function plotting utility that supports lots of output formats, including drivers for many printers, (La)TeX, (x)fig, Postscript, and so on. The X11-output is packaged in gnuplot-x11.

Data files and self-defined functions can be manipulated by the internal C-like language. Can perform smoothing, spline-fitting, or nonlinear fits, and can work with complex numbers.

This metapackage is to install a full-featured gnuplot (-qt, -x11 or -nox).

A density-functional theory (DFT) Python code based on the projector-augmented wave (PAW) method and the atomic simulation environment (ASE). It uses real-space uniform grids and multigrid methods, atom-centered basis-functions or plane-waves.

GPeriodic is een klein X/GTK+-gebaseerd programma waarmee je door de periode tabel van chemische elementen kan bladeren, en van elk element kan je gedetaileerde informatie opvragen. De tabel bevat 118 elementen.

Grace is a point-and-click tool that allows the user to draw X-Y plots. This is the program formerly known as Xmgr.

A few of its features are: User defined scaling, tick marks, labels, symbols, line styles, colors, polynomial regression, splines, running averages, DFT/FFT, cross/auto-correlation, batch mode for unattended plotting, and hardcopy support for PostScript, FrameMaker and several image formats.

Graph drawing addresses the problem of visualizing structural information by constructing geometric representations of abstract graphs and networks. Automatic generation of graph drawings has important applications in key technologies such as database design, software engineering, VLSI and network design and visual interfaces in other domains. Situations where these tools might be particularly useful include:

• you would like to restructure a program and first need to understand the relationships between its types, procedures, and source files
• you need to find the bottlenecks in an Internet backbone - not only individual links, but their relationships
• you're debugging a protocol or microarchitecture represented as a finite state machine and need to figure out how a certain error state arises
• you would like to browse a database schema, knowledge base, or distributed program represented graphically
• you would like to see an overview of a collection of linked documents
• you would like to discover patterns and communities of interest in a database of telephone calls or e-mail messages

This package contains the command-line tools.

The GNU Scientific Library (GSL) is a collection of routines for numerical analysis. The routines are written from scratch by the GSL team in C, and present a modern API for C programmers, while allowing wrappers to be written for very high level languages.

This package provides several example binaries.

URL: http://www.gnu.org/software/gsl/

Gwyddion is a modular program for Scanning Probe Microscopy (SPM) data visualization and analysis. It is primarily intended for analysis of height field data obtained by microscopy techniques like

• Atomic Force Microscopy (AFM),
• Magnetic Force Microscopy (MFM),
• Scanning Tunneling Microscopy (STM),
• Near-field Scanning Optical Microscopy (SNOM or NSOM) and others. However, it can be used for arbitrary height field and image analysis.

This package contains the main application and its modules. It also contains a GNOME (and Xfce) thumbnailer which creates previews for all file types known to Gwyddion.

BLAS (Basic Linear Algebra Subroutines) is a set of efficient routines for most of the basic vector and matrix operations. They are widely used as the basis for other high quality linear algebra software, for example lapack and linpack. This implementation is the Fortran 77 reference implementation found at netlib.

This package contains a shared version of the library.

LAPACK version 3.X is a comprehensive FORTRAN library that does linear algebra operations including matrix inversions, least squared solutions to linear sets of equations, eigenvector analysis, singular value decomposition, etc. It is a very comprehensive and reputable package that has found extensive use in the scientific community.

This package contains a shared version of the library.

SSM is a macromolecular coordinate superposition library, written by Eugene Krissinel of the EBI.

The library implements the SSM algorithm of protein structure comparison in three dimensions, which includes an original procedure of matching graphs built on the protein's secondary-structure elements, followed by an iterative three-dimensional alignment of protein backbone Calpha atoms.

This package contains the binaries of the libraries

MayaVi2 is a cross-platform tool for 2-D and 3-D scientific data visualization. Its features include:

• Visualization of scalar, vector and tensor data in 2 and 3 dimensions
• Easy scriptability using Python
• Easy extendability via custom sources, modules, and data filters
• Reading several file formats: VTK (legacy and XML), PLOT3D, etc.
• Saving of visualizations
• Saving rendered visualization in a variety of image formats.

MayaVi2 has been designed with scriptability and extensibility in mind. While the mayavi2 application is usable by itself, it may be used as an Envisage plugin which allows it to be embedded in user applications natively. Alternatively, it may be used as a visualization engine for any application.

This package also provides TVTK, which wraps VTK objects to provide a convenient, Pythonic API, while supporting Traits attributes and NumPy/SciPy arrays. TVTK is implemented mostly in pure Python, except for a small extension module.

MPQC is an ab-inito quantum chemistry program. It is especially designed to compute molecules in a highly parallelized fashion.

It can compute energies and gradients for the following methods:

• Closed shell and general restricted open shell Hartree-Fock (HF)
• Density Functional Theory (DFT)
• Closed shell second-order Moeller-Plesset perturbation theory (MP2)

Additionally, it can compute energies for the following methods:

• Open shell MP2 and closed shell explicitly correlated MP2 theory (MP2-R12)
• Second order open shell pertubation theory (OPT2[2])
• Z-averaged pertubation theory (ZAPT2)

It also includes an internal coordinate geometry optimizer.

MPQC is built upon the Scientific Computing Toolkit (SC).

NCO is a suite of programs known as operators. The operators are stand-alone, command-line programs executable in a POSIX shell. Operators take one or more netCDF files as input, perform operations (e.g., averaging, hyperslabbing), and produce a netCDF output file. NCO was originally designed to manipulate and analyze climate data, though it works on any netCDF format datasets.

You would use ncview to get a quick and easy, push-button look at your NetCDF files. You can view simple movies of the data, view along various dimensions, take a look at the actual data values, change color maps, invert the data and other simple visual operations.

Contains the programs ncdump and ncgen which convert NetCDF files to ASCII and back, respectively. NetCDF (network Common Data Form) is an interface for scientific data access and a freely-distributed software library that provides an implementation of the interface. The netCDF library also defines a machine-independent format for representing scientific data. Together, the interface, library, and format support the creation, access, and sharing of scientific data.

NeXus is a common data format for neutron, X-ray, and muon science. It is being developed as an international standard by scientists and programmers representing major scientific facilities in Europe, Asia, Australia, and North America in order to facilitate greater cooperation in the analysis and visualization of neutron, X-ray, and muon data.

This is the package containing some applications for reading and writing NeXus files.

Octave is a (mostly MATLAB® compatible) high-level language, primarily intended for numerical computations. It provides a convenient command-line interface for solving linear and nonlinear problems numerically.

Octave can be dynamically extended with user-supplied C++ files.

The KIM API is an Application Programming Interface for atomistic simulations. The API provides a standard for exchanging information between atomistic simulation codes (molecular dynamics, molecular statics, lattice dynamics, Monte Carlo, etc.) and interatomic models (potentials or force fields). It also includes a set of library routines for using the API with bindings for:

FORTRAN 77, Fortran 90/95, Fortran 2003 C, C++

Atomistic simulation codes that support the KIM API work seamlessly with the KIM-compliant interatomic models (KIM Models) distributed on this website. The interface is computationally efficient and often requires relatively minor changes to existing codes.

This package contains models and model-drivers for KIM-API

Open MPI is a project combining technologies and resources from several other projects (FT-MPI, LA-MPI, LAM/MPI, and PACX-MPI) in order to build the best MPI library available. A completely new MPI-3.1 compliant implementation, Open MPI offers advantages for system and software vendors, application developers and computer science researchers.

Features:

• Full MPI-3.1 standards conformance
• Thread safety and concurrency
• Dynamic process spawning
• High performance on all platforms
• Reliable and fast job management
• Network and process fault tolerance
• Support network heterogeneity
• Single library supports all networks
• Run-time instrumentation
• Many job schedulers supported
• Internationalized error messages
• Component-based design, documented APIs

This package contains the Open MPI utility programs.

OpenMX (Open source package for Material eXplorer) is a program package for nano-scale material simulations based on density functional theories (DFT), norm-conserving pseudopotentials and pseudo-atomic localized basis functions. Since the code is designed for the realization of large-scale ab initio calculations on parallel computers, it is anticipated that OpenMX can be a useful and powerful tool for nano-scale material sciences in a wide variety of systems such as biomaterials, carbon nanotubes, magnetic materials, and nanoscale conductors.

PSI3 is an ab-initio quantum chemistry program. It is especially designed to accurately compute properties of small to medium molecules using highly correlated techniques.

It can compute energies and gradients for the following methods:

• Closed shell and general restricted open shell Hartree-Fock (RHF/ROHF) (including analytical hessians for RHF)
• Closed shell Moeller-Plesset pertubation theory (MP2)
• Complete active space SCF (CASSCF)
• Coupled-cluster singles doubles (CCSD)
• Coupled-cluster singles doubles with pertubative triples (CCSD(T)) (only for unrestricted (UHF) reference wavefunctions)

Additionally, it can compute energies for the following methods:

• Unrestricted open shell Hartree-Fock (UHF)
• Closed/open shell Moeller-Plesset pertubation theory (MP2)
• Closed shell explicitly correlated MP2 theory (MP2-R12) and spin-component scaled MP2 theory (SCS-MP2)
• Multireference configuration-interaction (MRCI)
• Coupled-cluster singles doubles with pertubative triples (CCSD(T))
• Second/third-order approximate coupled-cluster singles doubles (CC2/CC3)
• Multireference coupled-cluster singles doubles (MRCCSD)
• Closed shell and general restricted open shell equation-of-motion coupled- cluster singles doubles (EOM-CCSD)

Further features include:

• Flexible, modular and customizable input format
• Excited state calculations with the CC2/CC3, EOM-CCSD, CASSCF, MRCI and MRCCSD methods
• Internal coordinate geometry optimizer
• Harmonic frequencies calculations
• One-electron properties like dipole/quadrupole moments, natural orbitals, electrostatic potential, hyperfine coupling constants or spin density
• Utilization of molecular point-group symmetry to increase efficiency

The lmfit Python package provides a simple, flexible interface to non-linear optimization or curve fitting problems. The package extends the optimization capabilities of scipy.optimize by replacing floating pointing values for the variables to be optimized with Parameter objects. These Parameters can be fixed or varied, have upper and/or lower bounds placed on its value, or written as an algebraic expression of other Parameters.

The principal advantage of using Parameters instead of simple variables is that the objective function does not have to be rewritten to reflect every change of what is varied in the fit, or what relationships or constraints are placed on the Parameters. This means a scientific programmer can write a general model that encapsulates the phenomenon to be optimized, and then allow user of that model to change what is varied and fixed, what range of values is acceptable for Parameters, and what constraints are placed on the model. The ease with which the model can be changed also allows one to easily test the significance of certain Parameters in a fitting model.

The lmfit package allows a choice of several optimization methods available from scipy.optimize. The default, and by far best tested optimization method used is the Levenberg-Marquardt algorithm from MINPACK-1 as implemented in scipy.optimize.leastsq. This method is by far the most tested and best support method in lmfit, and much of this document assumes this algorithm is used unless explicitly stated. An important point for many scientific analysis is that this is only method that automatically estimates uncertainties and correlations between fitted variables from the covariance matrix calculated during the fit.

A few other optimization routines are also supported, including Nelder-Mead simplex downhill, Powell's method, COBYLA, Sequential Least Squares methods as implemented in scipy.optimize.fmin, and several others from scipy.optimize. In their native form, some of these methods setting allow upper or lower bounds on parameter variables, or adding constraints on fitted variables. By using Parameter objects, lmfit allows bounds and constraints for all of these methods, and makes it easy to swap between methods without hanging the objective function or set of Parameters.

Finally, because the approach derived from MINPACK-1 usin the covariance matrix to determine uncertainties is sometimes questioned (and sometimes rightly so), lmfit supports methods to do a brute force search of the confidence intervals and correlations for sets of parameters.

This is the Python 3 version of the package.

SciPy supplements the popular NumPy module (python-numpy package), gathering a variety of high level science and engineering modules together as a single package.

SciPy is a set of Open Source scientific and numeric tools for Python. It currently supports special functions, integration, ordinary differential equation (ODE) solvers, gradient optimization, genetic algorithms, parallel programming tools, an expression-to-C++ compiler for fast execution, and others.

SymPy is a Python library for symbolic mathematics (manipulation). It aims to become a full-featured computer algebra system (CAS) while keeping the code as simple as possible in order to be comprehensible and easily extensible. SymPy is written entirely in Python and does not require any external libraries, except optionally for plotting support.

This package contains the Python 3 version of sympy.

Pyxplot is a multi-purpose graph plotting tool, scientific scripting language, vector graphics suite, and data processing package. Its interface is designed to make common tasks -- e.g., plotting labelled graphs of data -- accessible via short, simple, intuitive commands.

Pyxplot produces publication-quality figures. To this end, text is rendered with all of the beauty and flexibility of the LaTeX typesetting environment.

Extensive documentation and examples can be found in the pyxplot-doc package. A gallery of sample plots is available from the project's web site.

Quantum ESPRESSO (formerly known as PWscf) is an integrated suite of computer codes for electronic-structure calculations and materials modeling at the nanoscale. It is based on density-functional theory, plane waves, and pseudopotentials (both norm-conserving, ultrasoft, and PAW).

Features include:

• Ground-state single-point and band structure calculations using plane-wave self-consistent total energies, forces and stresses
• Separable norm-conserving and ultrasoft (Vanderbilt) pseudo-potentials, PAW (Projector Augmented Waves)
• Various exchange-correlation functionals, from LDA to generalized-gradient corrections (PW91, PBE, B88-P86, BLYP) to meta-GGA, exact exchange (HF) and hybrid functionals (PBE0, B3LYP, HSE)
• Car-Parrinello and Born-Oppenheimer Molecular Dynamics
• Structural Optimization including transition states and minimum energy paths
• Spin-orbit coupling and noncollinear magnetism
• Response properties including phonon frequencies and eigenvectors, effective charges and dielectric tensors, Infrared and Raman cross-sections, EPR and NMR chemical shifts
• Spectroscopic properties like K- and L1-edge X-ray Absorption Spectra (XAS) and electronic excitations

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.

This metapackage will install Debian Science packages useful for numerical computation. The packages provide an array oriented calculation and visualisation system for scientific computing and data analysis. These packages are similar to commercial systems such as Matlab and IDL.

Scilab is a matrix-based scientific software package. Scilab contains hundreds of built-in mathematical functions, rich data structures (including polynomials, rationals, linear systems, lists, etc...) and comes with a number of specific toolboxes for control, signal processing, ...

This package also provides Xcos, a graphical editor to design hybrid dynamical systems models. Models can be designed, loaded, saved, compiled and simulated. Stable and efficient solution for industrial and academics needs, Xcos provides functionalities for modeling of mechanical systems (automotive, aeronautics...), hydraulic circuits (dam, pipe modeling...), control systems, etc. Modelica capabilities are also provided.

For a minimum version of scilab, install package "scilab-cli".

A free cross-platform library of fast C++ routines for plotting data in up to 3 dimensions. It can export plots to bitmaps and vector EPS, SVG, IDTF files. There are simple window interfaces based on GLUT, FLTK and/or Qt. MathGL can also be used in the console. There are interfaces to a set of languages, such as, C, Fortran, Pascal, Forth, Python, Octave.

This package contains the udav window environment based on mathgl.

V_Sim visualizes atomic structures such as crystals, grain boundaries, molecules and so on (either in binary format, or in plain text format).

The rendering is done in pseudo-3D with spheres (atoms) or arrows (spins). The user can interact through many functions to choose the view, set the bindings, draw cutting planes, compute surfaces from scalar fields, duplicate nodes, measure geometry... Moreover V_Sim allows one to export the view as images in PNG, JPG, PDF (bitmap), SVG (scheme) and other formats. Some tools are also available to colorize atoms from data values or to animate on screen many position files.

The analysis of macromolecular structures often requires a comprehensive definition of atomic neighborhoods. Such a definition can be based on the Voronoi diagram of balls, where each ball represents an atom of some van der Waals radius. Voronota is a software tool for finding all the vertices of the Voronoi diagram of balls. Such vertices correspond to the centers of the empty tangent spheres defined by quadruples of balls. Voronota is especially suitable for processing three-dimensional structures of biological macromolecules such as proteins and RNA.

Since version 1.2 Voronota also uses the Voronoi vertices to construct inter-atom contact surfaces and solvent accessible surfaces. Voronota provides tools to query contacts, generate contacts graphics, compare contacts and evaluate quality of protein structural models using contacts.

Axiom is useful for research and development of mathematical algorithms. It defines a strongly typed, mathematically correct type hierarchy. It has a programming language and a built-in compiler.

Axiom has been in development since 1973 and was sold as a commercial product. It has been released as free software.

Efforts are underway to extend this software to (a) develop a better user interface (b) make it useful as a teaching tool (c) develop an algebra server protocol (d) integrate additional mathematics (e) rebuild the algebra in a literate programming style (f) integrate logic programming (g) develop an Axiom Journal with refereed submissions.

This package contains the main program binary and all precompiled algebra and autoloadable modules.

Data Explorer is a system of tools and user interfaces for visualizing data. In general terms the visualization of data can be considered a 3-stage process:

   1. Describing and importing data
   2. Processing the data through a visualization program
   3. Presenting the resulting image.
This is the main package.

Data Explorer is a system of tools and user interfaces for visualizing data. In general terms the visualization of data can be considered a 3-stage process:

   1. Describing and importing data
   2. Processing the data through a visualization program
   3. Presenting the resulting image.
This is the documentation package. It includes online help and html

documentation.

This package contains examples of scripts and networks for the OpenDX Data Explorer. They are referenced in the OpenDX tutorial, but can also be used stand-alone to browse and investigate.

Hierarchical Data Format 5 (HDF5) is a file format and library for storing scientific data. HDF5 was designed and implemented to address the deficiencies of HDF4.x. It has a more powerful and flexible data model, supports files larger than 2 GB, and supports parallel I/O.

This package contains helper tools for HDF5.

Hierarchical Data Format 5 (HDF5) is a file format and library for storing scientific data. HDF5 was designed and implemented to address the deficiencies of HDF4.x. It has a more powerful and flexible data model, supports files larger than 2 GB, and supports parallel I/O.

This package contains runtime tools for HDF5.

This module provides an interface to layout and image generation of directed and undirected graphs in a variety of formats (PostScript, PNG, etc.) using the "dot", "neato", "twopi", "circo" and "fdp" programs from the GraphViz project (http://www.graphviz.org/ or http://www.research.att.com/sw/tools/graphviz/).

Maxima is a fully symbolic computation program. It is full featured doing symbolic manipulation of polynomials, matrices, rational functions, integration, Todd-coxeter methods for finite group analysis, graphing, multiple precision floating point computation. It has a symbolic source level debugger for maxima code. Maxima is based on the original Macsyma developed at MIT in the 1970s. It is quite reliable, and has good garbage collection, and no memory leaks. It comes with hundreds of self tests.

This package contains the main executables and base system files.

NetCDF (network Common Data Form) is an interface for scientific data access and a freely-distributed software library that provides an implementation of the interface. The netCDF library also defines a machine-independent format for representing scientific data. Together, the interface, library, and format support the creation, access, and sharing of scientific data.

This package contains documentation for the NetCDF library in a variety of formats.

Open MPI is a project combining technologies and resources from several other projects (FT-MPI, LA-MPI, LAM/MPI, and PACX-MPI) in order to build the best MPI library available. A completely new MPI-3.1 compliant implementation, Open MPI offers advantages for system and software vendors, application developers and computer science researchers.

This package contains man pages describing the Message Passing Interface standard.

PyMca is set of applications and Python libraries for analysis of X-ray fluorescence spectra.

The applications included in this package are:

• edfviewer - Display and inspection of data files in ESRF Data Format
• elementsinfo - Displays element specific X-ray data
• mca2edf - Converts files from SPEC MCA format to EDF
• peakidentifier - Displays X-ray fluorescence peaks in a given energy range
• pymcabatch - Batch fitting of spectra
• pymcapostbatch - Post-processing of batch fitting results
• pymca - Interactive data-analysis
• pymcaroitool - Region-of-interest (ROI) imaging tool

The PyMca toolkit can read data files in SPEC, ESRF data file (EDF), OMNIC, HDF5, AIFIRA and SupaVisio formats.

This are the scripts of the package.

Pygraphviz is a Python interface to the Graphviz graph layout and visualization package.

With Pygraphviz you can create, edit, read, write, and draw graphs using Python to access the Graphviz graph data structure and layout algorithms.

This package contains the Python 3 version of python-pygraphviz.

Qtiplot is a fully fledged plotting software similar to the OriginLab Origin software (See http://www.originlab.com for more information about Origin).

It can make two and three dimensional plots of publication quality, both from datasets and functions. It can do non-linear fitting and multi-peak fitting.

Some Features:

• Cross platform: works natively on Windows, Mac OS X and Linux/Unix systems
• Fully Python scriptable
• OpenGL based 3D plotting
• Publication quality plots and easy export to various image formats (EMF, EPS, PS, PDF, SVG, BMP, JPG, PNG, TIFF, etc ...)
• Easy integration with LaTeX typesetting system
• Powerful and versatile spreadsheets with column-logic calculations and easy import/export of multiple files
• One-click access to extensive built-in data analysis routines
• Advanced statistical analysis: Student's t-Test, ANOVA, chi-square test for variance, normality test (Shapiro-Wilk)
• Linear and nonlinear curve fitting with weighting and estimation of statistical errors of the fit-parameters
• Multi-peak fitting
• Image analysis tools
• Templates support: all settings for plots, tables and matrices can be saved and restored later on for a fast editing process
• Project files based on folders, a powerful project explorer with built-in drag and drop and searching facilities
• Full import of Excel workbooks and Open Document Format spreadsheets, dBase, SQLite and Microsoft Access databases

This metapackage will install Debian Science packages related to Mathematics. You might also be interested in the field::mathematics debtag and, depending on your focus, in the education-mathematics metapackage.