OpenSpectralWorks Project

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Openspectralworks - "a suit of Programs for viewing, editing, and manipulating spectral data"
OpenSpectralworks is a suite of programs for viewing and manipulating digitized spectroscopic data, i.e. data consisting of an optical measurement such as light absorbance as a function of wavelength or energy of the light (or other radiation) involved. It is most useful for those spectroscopies for which the Lambert-Beer law or an analogous relation holds.

Two problems are of special interest to the initiating author:
1. Linear LS fitting of experimental spectra to linear combinations of known basis spectra to determine the composition of a mixture (and its changes with time).
2. Global fitting of multi-wavelength, multi-spectral data ("3D data") to thermodynamic or kinetic models to determine the parameters involved and the spectra of the different model components.. Examples are potentiometric or pH titrations data, and multiexponential fitting.

Latest release 1.0
Getting Started GettingStarted.pdf
Tutorials/demos: Fitting cytochrome difference spectRa, fitting chlorophyll spectra, setting up standard basis spectra for fitting. demo1.pdf, demo2.pdf, demo3.pdf
Discusion board
Windows executable latest version
User package with executable, sample data, and tutorials
Developer package with everything including source code

project description submitted to SF at initiation of the project.
Digitized Spectra as vectors in n-dimensional space, where n is the number of sampling points.
Tutorial Linear analysis of absorbtion spectra: from Warburg&Christian to Singular Value Decomposition.
Demo version of linear LSQ analysis using MS-QuicBasic compiled programs.
Application- Fitting the difference spectra of the cytochromes of mitochondrial RespiratoryComplex III.
About the name- OpenSpectralWorks Fitting the difference spectra of the cytochromes of mitochondrial RespiratoryComplex III.

Maintainer contact information:
Edward A. Berry
 eaberry at
eaberry1 at