How to estimate the accuracy for an estimated tine segment when actual line is known?

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Tharindu Weerakoon
Tharindu Weerakoon 2015 年 11 月 25 日
回答済み: Image Analyst 2015 年 11 月 25 日
Suppose I have a set of XY coordinates (pink dots including noise)which is a measured values of a line segment (Black line). After estimating the best line (Orange line) for the measured data points, how can I calculate the accuracy of the fitted line with the actual one.
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Tharindu Weerakoon
Tharindu Weerakoon 2015 年 11 月 25 日
Estimating using Orthogonal Least squares method which is a separately written matlab m-file, not the ployfit() function.

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Image Analyst
Image Analyst 2015 年 11 月 25 日
You can get the residuals and use R or R^2 or the sum of absolute differences. R squared is a pretty common metric - why not use that?

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