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Latest News:
2026-07-12: ScanEdit has a user
manual! Kind of rough still, but pretty
complete. Ideally the program is sufficiently intuitive that you
can use most of its capabilities without consulting a manual. But
if you don't know what function to use for the job at hand, or
where to find it, it can be useful to have a well-organized list
of the capabilities and instructions for their use.
Even if you are not currently interested in
using the program, you might be interested to see one
spectroscopist's idea of what a UV-vis spectral editor should
entail. Get the manual and see if this looks like something you
could use. If you feed it to your favorite AI, you may be able to
generate your own version of ScanEdit! And of course we
would be happy to receive suggestions for new features.
2026-07-12; A new update ("nightly build") of
the program to coincide with the user manual. The program has
advanced greatly since the last release in 2018, and many of the
functions described in the manual did not exist in that
version. New users should still get "Tutorials.zip"
from the 1.0 release, for installing the program. Then replace the
executable with the latest
nightly build
2025-12-16 Modified the Fourier routines to use Discrete Cosine Transform DCT-II and DCT-III. Had been using DCT-I which defines the half-period to be from 0 at the first point to π at the last point. The new routines take 0 as half-interval before the first data point in the spectrum and π as a half-interval after the last point. This means no points are on "special positions" and the discontinuities are safely positioned half-way between data points. The first and last points (and all points) will be reproduced exactly of you use all terms to reconstruct the spectrum from its transform.
2025-10-18 Added "Color Pickers" to redefine the palettes of 16
colors used to plot- on screen, and for postscript files. The
modified pallets can be saved (in the user's %appdata%) to be the
default on the next run.
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
multi-exponential kinetics fitting.
Edward A. Berry eaberry at users.sourceforge.net eaberry1 at pacbell.netgmail.com