All Forums  Origin Forum for Programming  Forum for Origin C  NLSF user-defined function help needed!

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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 findme[/i] [br]Sorry for this dummy question. But I am really a newbie of Origin. I have a dataset and want to use NLSF to fit the data. I already know the equation we should apply. But I don't know how to define the function in Origin7 which I am using now even after I read through the help files. Hope someone can help me with this function below. The function is: y=abs(a*tan(b*x)) [abs represents the absolute value] I want to fit the dataset and get the best-fit a&b values.Thanks in advance! Findme [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.