SimLoop {SimilarityMeasures}

Loop Over and Test Trajectories With Different Translations

Description

Function to loop over and test the trajectories using the different translations in each dimension. This is used by the LCSS function to test all of the n dimensional translations. Do not call this function directly.

Usage

SimLoop(traj1, traj2, pointSpacing, pointDistance, spacing, 
        similarity, translations, dimensions, 
        dimLeft=dimensions, currentTrans=rep(0, dimensions))

Arguments

traj1

An m x n matrix containing trajectory1. Here m is the number of points and n is the dimension of the points.

traj2

A k x n matrix containing trajectory2. Here k is the number of points and n is the dimension of the points. The two trajectories are not required to have the same number of points.

pointSpacing

An integer value of the maximum index difference between trajectory1 and trajectory2 allowed in the calculation.

pointDistance

A floating point number representing the maximum distance in each dimension allowed for points to be considered equivalent.

spacing

The integer spacing between each translation that will be tested.

similarity

A vector containing the current best similarity and translations calculated.

translations

A list of vectors containing the translations in each dimension.

dimensions

An integer representing the number of dimensions being used for the calculation.

dimLeft

An integer number of dimensions which have not been looped over yet.

currentTrans

A vector containing the current translation being tested.

Details

This function is used to loop over the n dimensions for the LCSS function. This function should not be called directly.

Value

Returns the current best LCSS value and the translations that created this as a vector.

Author(s)

Kevin Toohey

See Also

LCSS, LCSSRatio, LCSSRatioCalc, LCSSTranslation, LCSSCalc

Examples

# Creating two trajectories.
path1 <- matrix(c(0, 1, 2, 3, 0, 1, 2, 3), 4)
path2 <- matrix(c(0, 1, 2, 3, 4, 5, 6, 7), 4)

# Running the LCSS algorithm on the trajectories.
LCSS(path1, path2, 2, 2, 0.5)