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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 Luke11[/i] [br]Origin Ver. and Service Release 9.1 b215: Operating System: Windows 10 Hi, everyone! Here's my problem: I have to execute a 2 parameter fit of some experimental data about a measure of resistivity. The formula I'm using is: rho(T)=rho0+T*A*integral(dOmega (F(Omega)*g(T,Omega))) (A and rho0 are the parameters to fit, T is the independent variable) g contains elementary functions (sinh(T) and T), while the only way to obtain F(Omega) is to digitize a graph that I found on some academic article, which I did. My question now is: is it there a way to call the digitized data from the fitting function builder in order to use it in the fit? Thanks in advance for the help! [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.