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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 DerekK[/i] [br]Hello I am doing a simple peak analysis using the Quick Peaks gadget (I've also tried the Peak Analyzer). My goal is to: 1) find the peak in the data (usually just one) and 2) tell me the width (x coords of begin and end of tails of the peak). A) The gadget puts Base Markers on the tails, but I cannot find documentation on how it determines where to put those. Once I understand that, then I would like to use those Base Markers to determine where the peak starts and ends. B) If option A) is not useful, then I will probably need to evaluate the slope on the tails of the peak and set the start end based on how they flatten out. Can anyone suggest a function in Origin that would help me do this? Thanks, Derek Origin Ver. and Service Release (Select Help-->About Origin): 2015sr2 Operating System:Win7 [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.