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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 michaeljcobb[/i] [br]My son is leaving for college to major in math. As a going away present, I am trying to put together an equation that is an approximation of the elevation profile of the 388 mile journey to his school. I downloaded a trial version of OrigonPro to do a curve fitting of my elevation data. Here is the link for an image of the first output I was able to produce: https://www.dropbox.com/s/fd3459ioyxt3w7w/First%20Curve%20Fitting.jpg?dl=0 Clearly, I'm not expert at this. The curve is not a very tight fit. Does anyone have any advice for how I might produce a better fit. The excel data for the curve can be found here: https://www.dropbox.com/s/sfum8st2zwtye91/Path%20Data%20-%20Copy.xlsx?dl=0 The x data is miles. the y data is feet. Any help would be greatly appreciated. Thanks in advance. Mike Mike [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.