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Header: AVL.h
Namespace: avl
Module: FoundationBasic

Approximates points with a line using Least Trimmed Error algorithm.

Applications: Brute-force finding of a line that best matches a subset of the input points. Very efficient against outliers, but possibly slow for bigger subsets.


void avl::FitLineToPoints_LTE
	const atl::Array<avl::Point2D>& inPoints,
	atl::Optional<const avl::Range&> inRange,
	int inSeedSubsetSize,
	atl::Optional<int> inEvalSubsetSize,
	avl::Line2D& outLine,
	atl::Optional<atl::Array<avl::Point2D>&> outLTInliers = atl::NIL,
	atl::Optional<float&> outLTError = atl::NIL,
	int& diagIterationCount = atl::Dummy<int>()


Name Type Range Default Description
inPoints const Array<Point2D>& Input points
inRange Optional<const Range&> NIL Determines which array points take part in fitting process
inSeedSubsetSize int 2 - 10 3 Number of points in one combination for getting a sample line
inEvalSubsetSize Optional<int> 3 - NIL Number of closest points used for evaluation of a sample line, or Auto if seed points are to be used
outLine Line2D& Fitted line
outLTInliers Optional<Array<Point2D>&> NIL Inlying points of the best LTE line
outLTError Optional<float&> NIL The Least Trimmed Error
diagIterationCount int& Number of combinations considered

Optional Outputs

The computation of following outputs can be switched off by passing value atl::NIL to these parameters: outLTInliers, outLTError.

Read more about Optional Outputs.


List of possible exceptions:

Error type Description
DomainError Empty array of points in FitLineToPoints_LTE.
DomainError Range exceeds the input point array in FitLineToPoints_LTE.