Hi Kleper, But your reduced chi-square is only 10^35. That seems like a pretty good fit... ;-)
There is obviously a numerical problem, corrupted data, corrupted project file -- something like that. Can you send me the project file? B > Please, help me. When I try to do any fit in Arthemis, setting all > parameters unless one, been this one any of the parameters, the fit gives > for the answer -1.0000 +/- 0.000000 like example down. What is happening? > > ============================================================ > Independent points = 8.239257812 > Number of variables = 1.000000000 > Chi-square = 0.120000000E+37 > Reduced Chi-square = 0.165762849E+36 > R-factor = NaN > Measurement uncertainty (k) = 0.000437667 > Measurement uncertainty (R) = 0.000724906 > Number of data sets = 1.000000000 > > Guess parameters +/- uncertainties (initial guess): > * amp = -1.0000000 +/- 0.0000000 (1.0000)* > Set parameters: > enot = 0 > delr = 0 > ss = 0.003 > c3 = 0.0001 > c4 = 0.00001 -- Bruce Ravel ------------------------------------ [email protected] National Institute of Standards and Technology Synchrotron Methods Group at NSLS --- Beamlines U7A, X24A, X23A2 Building 535A Upton NY, 11973 My homepage: http://xafs.org/BruceRavel EXAFS software: http://cars9.uchicago.edu/~ravel/software/exafs/ _______________________________________________ Ifeffit mailing list [email protected] http://millenia.cars.aps.anl.gov/mailman/listinfo/ifeffit
