All Forums  Origin Forum  Origin Forum  How to integrate a curve under Y=0

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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 munchem[/i] [br]Origin Ver. and Service Release (Select Help-->About Origin): OriginPro 8.5.0 SR1 Operating System: Windows 7 Hi All, I have a set of data, consisting about 234 points. The plot for the data is pretty much similar to picture on the attachment. What I'm trying to do is to integrate the area between the curve under the X axis or Y=0 and the curve from the data. I was trying to use the peaks and baseline option, but it didn't work well. Also, i tried to use the integration option on the mathematics analysis option. Didn't work as well. Is there any way to do it correctly, I really appreciate your help. [img]http://www.originlab.com/ftp/forum_and_kbase/Images/munchem.jpg[/img] [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.