GenCurvefit

Last changed: 1 week 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.

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Visualization and Analysis of Broadband Transient Absorption Data

Last changed: 3 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

Abeles - specular Neutron/Xray reflectivity curve simulation

Last changed: 3 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.

Igor Sequencer for Arduino

Last changed: 6 weeks 1 day ago

Igor Sequencer controls an Arduino device to produce sequences of output pulses in a user-defined sequence. It provides low cost control of up to 12 outputs in two banks of 6 pins with sub-millisecond accuracy. Sequences are programmed through a GUI and they can be saved and loaded for quick recall.

syntax highlighting for gtksourceview for editors like gedit or meld

Last changed: 7 weeks 5 days ago

This set of files allows you to get syntax highlighting in gedit (http://en.wikipedia.org/wiki/Gedit) or meld (http://en.wikipedia.org/wiki/Meld_%28software%29). These editors are crossplatform (windows, mac, linux) and open source.
This allows to compensate for some missing features of the native igor editor, namely:

easyHttp

Last changed: 8 weeks 5 days ago

A XOP for web browsing URL/URI's. This could take the form of http://, https://, ftp://, file://, sftp://, scp:// connections. The operation directs output either to a string variable, or to File. A threadsafe operation is available.
Uses the Curl library.

HITRAN procedures for Igor

Last changed: 12 weeks 4 days ago

Collection of functions and procedures for loading data from the HITRAN database and simulating optical transmission through the atmosphere as a function of temperature, pressure and gas composition as well as thermal emission.

Doxygen filter for procedure files

Last changed: 13 weeks 5 hours ago

The Igor Pro procedure file syntax is not supported by doxygen.
The easiest way to support it, is to write an input filter for doxygen.
This project here is a proof of concept implementation in AWK of an filter which translates procedure files into C-ish output.

Tone Generator for Audio Output

Last changed: 23 weeks 5 days ago

This is a procedure file that creates a panel for controlling generation of an audio tone (played out of the computer speakers or headphone jack).
Users can define frequency, duration, and whether the tone is repeated (as well as the delay between consecutive tones).

Brownian Motion Simulator

Last changed: 25 weeks 4 days ago

A Procedure File (BM_Simulator.ipf) for simulating a random walk and modeling Brownian Motion. This procedure creates a series of displacements generated after a "particle" experiences a series of random molecular collisions. Each collision moves the particle a distance determined by its mean free path setting. After a defined number of collisions, the particle is at a new, random location and the distance between its starting location and final location is termed a "displacement".

Tango for Igor Pro

Last changed: 27 weeks 2 days ago

TANGO is an object oriented distributed control system being actively developed as a collaborative effort between several synchrotron institutes. The object model in TANGO supports methods, attributes and properties. In TANGO all objects are representations of devices. The devices can run on the same computer or distributed over computers interconnected by a network. The network communication is based on CORBA & ZMQ. Communication can be synchronous, asynchronous or event driven. Configuration data is stored in a database.

DE - optimize with differential evolution

Last changed: 28 weeks 12 hours ago

Differential Optimisation - use instead of optimize if that isn't finding the global minimum.
Minimise (or maximise) an energy function by varying independent variables using differential evolution.

Ellis 2: Complex curve fitting for one independent variable

Last changed: 30 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.

Multiple folder chooser

Last changed: 35 weeks 4 days ago

Allows user to select multiple folders from a standard OS X file chooser dialog. Returns a string list with the HFS representation of the selected folders.

Lumencor SOLA light driver Panel

Last changed: 40 weeks 4 days ago

The following procedure creates a small, simple panel for controlling a Lumencor SOLA light driver:
http://lumencor.com/product/sola-light-engine/