  SUePDF is a graphic-user-interface program written in MATLAB to achieve
quantitative pair distribution functions (PDF) from electron diffraction data.
The program facilitates the structural studies of amorphous materials and small
nanoparticles based on electron diffraction data from transmission electron
microscopes (TEMs). It is based on the physics of electron scattering as well
as the total scattering methodology. A method of background modelling is
introduced to treat the intensity tail of the direct beam, inelastic scattering
and incoherent multiple scattering. Kinematical electron scattering intensity
is scaled using the electron scattering factors. The PDFs obtained after
Fourier transforms are normalized with respect to number density, nanoparticle
form factor, and the non-negativity of probability density. SUePDF is
distributed as free software for academic users.
