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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by 19102208[/i] [br]Origin Ver. 8 How exactly is the phase of the sinus fit in Origin defined? According to the user guide the phase shift is fit-variable xc. http://www.originlab.de/www/helponline/origin/en/UserGuide/Sine.html Relative to what is the shift defined? E.g. suppose, I have a peak at 180°. What is the phase shift in this case? Can I directly determine the peak position from the fitting parameters? Thanks. [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.