Bruce Ravel wrote:
See my comment below on the value of attaching a small project file
Also, this is more of a software question. I'm not sure why, but about half of the samples flip their orientation 180 degrees (from positive y to negative y) when "normalizing" them. But when I'm trying to display several samples at once about half are showing positive peaks and half are negative peaks. For instance, samples 10, 3 and 1 don't flip when normalized, however all of the other samples do.
I don't really know what you are talking about, but I suspect that you have poorly chosen values for the pre-edge or nromalization parameters:
I think I might go back a few steps first and make sure the data files and experimental setup are/were such that I0/If/It are properly labeled and selected so that the pre-edge/norm parameters *can* be properly chosen. -- Jason Gaudet Environmental Catalysis and Nanomaterials Laboratory Department of Chemical Engineering Virginia Tech 147B Randolph Hall Blacksburg, VA 24061 540-231-9371 jgaudet@vt.edu