how to draw best fitt graph in c# .net

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Is it possible to draw a best fit line or curve through a set of points that have been plotted on a chart control? I have two series, one whose trend is a straight line, and one whose tren is an exponential curve. Can the RAdChart control calculate the best fit line for me? If not, does anyone know where I can find the code to calculate the line so I can plot it manually?

Posted 17-Mar-11 5:42am

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Olivier Levrey 17-Mar-11 11:48am

I voted 1 because you already posted this question and received an answer. Don't post another question to get more answers, just edit the previous one.
http://www.codeproject.com/Questions/169705/how-to-draw-best-fitt-graph-in-csharp-net.aspx

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Manfred Rudolf Bihy · Answer 1 · 2011-03-17T05:59:00

In a forum about Telerik's RadChart control I read that it doesn't do any regression (best fit) analysis. For a quick start and basic information please see here: http://en.wikipedia.org/wiki/Regression_analysis[^].
There are different algorithms for differents type of regression analysis:

Linear: See this CP article: An Algorithm for Weighted Linear Regression[^]
Polynomial: http://en.wikipedia.org/wiki/Polynomial_regression[^]
Non linear: http://en.wikipedia.org/wiki/Nonlinear_regression[^]

I've found a library also for C# here: http://www.extremeoptimization.com/StatsFeatures.aspx[^]. If you scroll down the page you'll find a comprehensive list of regression analysis methods that it implements. I didn't look yet at wether it's free or not. It looks promising though so placed the link here in case you want to take a look for yourself.

Best Regards,