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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 itamochi[/i] [br]Hi, I'm using Origin pro. I want to do curve fitting for similar waves by batch peak analyzer. Now, I determine the position of sub-band by manually entered. In the initial condition, curve fitting can not succeed well. When I set the lower limit of height or width of sub-band (for example, 0<height<100, 1<width), curve fitting of some waves goes smoothly. Is this the right way to succeed curve fitting? And I have another problem. When I change the lower limit value of width(for example, width>1 �� width>2 like below figure), fitting is going well, but #8203;#8203;areas of each sub-bands sometimes change greatly. Please tell me how to optimize the limitation value. [img]http://www.originlab.com/ftp/forum_and_kbase/Images/140807_itamochi_2.png[/img][img]http://www.originlab.com/ftp/forum_and_kbase/Images/140807_itamochi_�P.png[/img] [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.