[Ifeffit] Question about the R_factor in artemis/ifeffit

Dear Matt and/or Bruce, First, thank you for the great software! I am a former EXAFSPAK user and have been really impressed by Artemis/ifeffit. It's easier to use, more flexible, and gives more reasonable errors for the fit parameters. My question is about the value of the R_factor for R-space fitting. This seems to be the R_factor for the real component of the Fourier transform only although the fitting is performed on both the real and imaginary components. Is there a reason that the contribution of the imaginary component to the R_factor is not included? Sincerely, Wayne --- Wayne Lukens Scientist Lawrence Berkeley National Laboratory email: wwlukens@lbl.gov phone: (510) 486-4305 FAX: (510) 486-5596