All Forums  Origin Forum  Origin Forum  Implementing a Broken Power Law to fit with

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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 Verdict[/i] [br]Good day, I'm trying to use the function builder in origin (OriginLab) to create a new function to fit with, the broken power law (http://en.wikipedia.org/wiki/Power_law#Broken_power_law) So, I think I got the actual function part down. For this I used if(x<xc) y =x^a1; if(x>xc) y = x^(a1-a2)*x^a2; if(x==xc) y = 0; Where xc, a1 and a2 are the parameters. However, I then get to the point where you have to choose a bunch of stuff (parameter ranges, script you run to guess initial values, etc) and I have no clue what to put in there. Does anyone have some experience with this? [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.