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Packages include individual Igor procedure files or collections of Igor procedure files that are related, as well as external operations (XOPs). To browse ALL projects (including those that have not been officially released) click on the Advanced Browse link above.

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Abeles - specular Neutron/Xray reflectivity curve simulation

Last changed: 7 weeks 6 days ago

This XOP generates neutron/Xray specular reflectivity curves from parameters that describe a scattering length density profile at an interface. The XOP is intensively used by the Motofit reflectivity fitting package.

  • multithreaded
    • VersionDateLinksStatus
    IGOR.5.00.x-5.x-dev2013-Apr-24Development snapshot for Igor 5.00.x and aboveHelp
    Categories:

    An interior-point gradient method for large-scale totally nonnegative least squares problems

    Last changed: 3 years 41 weeks ago

    Igor code for solving NNLS problems, coded using: http://www.caam.rice.edu/~zhang/reports/tr0408.ps (Michael Merritt and Yin Zhang, Technical Report TR04-08, Department of Computational and Applied Mathematics, Rice University, Houston, Texas 77005, U.S.A., May, 2004)

    VersionDateLinksStatus
    IGOR.6.00.x-1.12009-Aug-30Recommended for Igor 6.00.x and aboveHelp
    Categories:

    Baseline Fitting

    Last changed: 5 years 35 weeks ago

    A baseline fitting utility for spectral data. Adds some items to the macros, marquee and trace popup menus. Use the all traces (shift-click) popup menu to fit baselines to many traces at once. To use the utility, make a plot of your raw data, initialise the baseline fit, select areas of the data with a marquee and right click for the option to add those regions to a maskwave. You can fit a line, 3rd or 4th order polynomial, Gaussian, Lorentzian or exponential curve or a smoothed spline to the selected regions and subtract the baseline via macro, trace or marquee menus.

    VersionDateLinksStatus
    IGOR.6.02.x-1.1.0-b2007-Oct-17Recommended for Igor 6.02.x and aboveHelp
    Categories:

    Baseline Spline Fit

    Last changed: 3 years 20 weeks ago

    For fitting baselines to vibrational spectra by eye ("flexi-curve" fitting). The easiest way to do this is to chose some node positions and fit a spline through the nodes. This Igor procedure file adds an interactive baseline fitting mode. Some submenus are added to the macro menu, including an option to subtract the baseline from the data.

    Usage

    Initialise from the macros menu, then use ctrl-1 (cmd-1 on the mac) to toggle between drawing mode, where you can drag the nodes, and normal mode, where you can interact with the graph in the usual way.

    VersionDateLinksStatus
    IGOR.6.10.x-2.02010-Jan-28Recommended for Igor 6.10.x and aboveHelp
    Categories:

    Ellis 2: Complex curve fitting for one independent variable

    Last changed: 34 weeks 6 days ago

    Ellis is a curve-fitting package exclusively for fitting complex functions of one independent variable. It has been used extensively in the optimization of electrochemical impedance models including simple Randles cells, Warburg diffusion elements, as well as more complicated models such as transmission lines and the point defect model of passivity.

    A library of common impedance circuits are included as well as a nicely-commented template for writing your own.

    View a 91-second quickstart video here: http://vimeo.com/43998169

    VersionDateLinksStatus
    IGOR.6.30.x-2.2-Release 22012-Oct-17Recommended for Igor 6.30.x and aboveHelp
    IGOR.6.20.x-2.2-Release 12012-Jun-15Recommended for Igor 6.20.x and aboveHelp
    Categories:

    GenCurvefit

    Last changed: 5 weeks 6 days ago

    GenCurvefit uses differential evolution (genetic optimisation), with a user defined fit function, to fit data with up to 50 independent variables. The technique is extremely good at finding global minima in Chi^2, even with poor starting guesses.

    Copyright - Andrew Nelson and the Australian Nuclear Science and Technology Organisation 2007.

    VersionDateLinksStatus
    IGOR.5.04.x-1.4.x-dev2013-May-08Development snapshot for Igor 5.04.x and aboveHelp
    Categories:

    Generalized Linear Model Fitting

    Last changed: 31 weeks 6 days ago

    This implements generalized linear models in a function glmfit. Support for unity-link (gaussian distribution), log-link (poisson distribution), and logit-link (binomial distribution), and tan-link (von mises distribution). General usage given in function TestGLMFit, with a log-link (poisson) example. It is best to just contact me directly for support.

    VersionDateLinksStatus
    IGOR.6.30.x-1.02012-Nov-07Recommended for Igor 6.30.x and aboveHelp
    Categories:

    MATLAB Functions

    Last changed: 2 years 45 weeks ago

    The biggest barrier to Igor adoption is usually knowledge of another environment's language. One of these is MATLAB. If a MATLAB users sits down to write Igor code, sometimes they have a hard time figuring out what the equivalent function in Igor is the function they know in MATLAB. And even if they find that function, if they haven't programmed in Igor, they might get stuck on the syntax.

    VersionDateLinksStatus
    IGOR.6.20.x-0.x-dev2010-Aug-05Development snapshot for Igor 6.20.x and aboveHelp
    Categories:

    Maximum Entropy Fitting package

    Last changed: 5 years 1 week ago

    This is Maximum Entropy Package for solving problems which can be written as linear equation: I = G f, where I is measured signal, G is response matrix and f is a model distribution. It has been used for interpretation of a size distribution from small-angle scattering data, which involves the inversion of an integral equation for which there is no exact solution. It can likely be used for number of similar problems.

    VersionDateLinksStatus
    IGOR.6.02.x-1.02008-Jun-09Recommended for Igor 6.02.x and aboveHelp
    Categories:

    NRFit

    Last changed: 1 year 33 weeks ago

    Neutron and X-ray reflectivity analysis package:

  • Use Parratt formalism
  • Simple and easy to use
  • Provide a number of functions for roughness

    • Installation:

  • Option1: Download anywhere on your computer and open_file/procedure from 'File' menu in IgorPro.
  • Option2: Download and copy it into Igor Procedures folder in IgorPro. It will shows up in the menu.
  • Note: if it complains about FONT, select your favorite font and apply it to all experiments. And new users might want to turn ON Tips from the Graph menu.

    • Downloads:

    VersionDateLinksStatus
    IGOR.6.10.x-6.1-MAC2011-Oct-28Recommended for Igor 6.10.x and aboveHelp
    IGOR.6.00.x-6.10-WIN2011-Oct-30Recommended for Igor 6.00.x and aboveHelp
    Categories:

    Photoemission pair fitting

    Last changed: 5 years 35 weeks ago

    A very old, as-is, you are on your own, your milage may vary version of multi-peak fitting for special voigt pairs that occur in photoemission work.

    VersionDateLinksStatus
    IGOR.5.00.x-0.1.02007-Oct-17Recommended for Igor 5.00.x and aboveHelp
    Categories:

    Size Distribution Fitting (lognormal) - Wdie-Range Particle Sizer (WPS) Data Processing

    Last changed: 1 year 13 weeks ago

    This igor procedure is to handle the airborne particle size distribution data measured using Wdie-Range Particle Sizer (WPS), since the original software provided along with the instrument is not very user-friendly.

    Starting with a neatly organized panel, all functions are simple and straightforward:
    - Load raw data with a single click;
    - Automatically obtain major parameters (RH, temperature) and calculate the hourly average; (daily or monthly average will be added in future release)
    - Graphing (size distribution, color-coded by number conc.);

    VersionDateLinksStatus
    IGOR.6.20.x-2.02012-Mar-15Recommended for Igor 6.20.x and aboveHelp
    Categories:

    Visualization and Analysis of Broadband Transient Absorption Data

    Last changed: 7 weeks 1 day ago

    Chirp correction procedures landed in version 4.2 and have been updated in version 4.3. Please continue to email with any comments or bugs.

    This package includes a set of functions for processing and graphing wavelength and time-resolved absorption data. This code was designed to process data created by the Helios Femtosecond Transient Absorption spectrometer produced by Ultrafast Systems, LLC. However, it will work with any data with the format:


    0, time_1, time_2, . . . , time_M
    wavelength_1, deltaOD_1_1, deltaOD_1_2, . . . , deltaOD_1_M

    VersionDateLinksStatus
    IGOR.6.20.x-4.52013-Apr-29Recommended for Igor 6.20.x and aboveHelp
    Categories:

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