All Forums  Origin Forum  Origin Forum  2 stage power fit don't converge

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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 Tasoscave[/i] [br]Hi, I am trying to fit a simple power curve in a 2-stage data set. The data are composed from two stages which means I need to fit a power fir curve twice. The first curve (1st stage) has a perfect match. However, the second (2nd stage) is not converging and I need to normalize the data back to zero in order to have a good fit. Any help will be much appreciated [img]http://www.originlab.com/ftp/forum_and_kbase/Images/2-stage power curve fit.bmp[/img] [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.