Error bars reported in the curve-fitting analysis in Artemis
Dear all, Could someone tell me how the uncertainities in the fitted variables are estimated in the curve-fitting analysis in Artemis? Thank you very much in advance for your help. Hiroshi Oji -- ========================================================= Hiroshi Oji, Dr. Industrial Application Division Japan Synchrotron Radiation Research Institute (JASRI) 1-1-1 Kouto, Sayo-cho Sayo-gun, Hyogo 679-5198 JAPAN E-mail oji-h@spring8.co.jp =========================================================
On Wednesday 17 December 2008 09:55:24 pm Hiroshi Oji wrote:
Dear all,
Could someone tell me how the uncertainities in the fitted variables are estimated in the curve-fitting analysis in Artemis?
Thank you very much in advance for your help.
Hiroshi, Here is one explanation from the mailing list: http://millenia.cars.aps.anl.gov/pipermail/ifeffit/2002-October/000141.htm Matt's followup is also very helpful: http://millenia.cars.aps.anl.gov/pipermail/ifeffit/2002-October/000142.html Pages 6 through 15 of the talk that I gave at the APS XAFS summer school last August are relevant to the last paragraph from the first link: http://xafs.org/Workshops/APS2008?action=AttachFile&do=get&target=Ravel_Advanced.pdf Hope that helps, B -- Bruce Ravel ------------------------------------ bravel@bnl.gov 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/
Dear Bruce, Thank you very much for telling me useful references! I have not fully understood yet because of my lack of knowledge of statistics, but I could roughly understand how they are estimated in Artemis. Best regards, Hiroshi. Bruce Ravel wrote:
On Wednesday 17 December 2008 09:55:24 pm Hiroshi Oji wrote:
Dear all,
Could someone tell me how the uncertainities in the fitted variables are estimated in the curve-fitting analysis in Artemis?
Thank you very much in advance for your help.
Hiroshi,
Here is one explanation from the mailing list: http://millenia.cars.aps.anl.gov/pipermail/ifeffit/2002-October/000141.htm
Matt's followup is also very helpful: http://millenia.cars.aps.anl.gov/pipermail/ifeffit/2002-October/000142.html
Pages 6 through 15 of the talk that I gave at the APS XAFS summer school last August are relevant to the last paragraph from the first link: http://xafs.org/Workshops/APS2008?action=AttachFile&do=get&target=Ravel_Advanced.pdf
Hope that helps, B
-- ========================================================= 陰地 宏 （財）高輝度光科学研究センター（JASRI） 産業利用推進室 〒679-5198兵庫県佐用郡佐用町光都1-1-1 TEL(PHS): 0791-58-0802-3713 または 0791-58-0803-3713 FAX: 0791-58-0830 E-mail: oji-h@spring8.or.jp Hiroshi Oji, Dr. Industrial Application Division Japan Synchrotron Radiation Research Institute (JASRI) 1-1-1 Kouto, Sayo-cho Sayo-gun, Hyogo 679-5198 JAPAN E-mail oji-h@spring8.co.jp =========================================================
participants (2)
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Bruce Ravel -
Hiroshi Oji