Math.Elbow

Documentation

findElbow :: (RealFloat a, Numeric a) => MaxMin -> Matrix a -> Maybe (Int, (a, a))

Get the elbow point (and its index) of a two-dimensional distribution. Uses the Max or Min to identify convex / concave point, depending on the choice (for positive x and y, top left hump would be Max, bottom right dip would be Min). Matrix rows are observations, columns are dimensions.

findElbowList :: (RealFloat a, Numeric a) => MaxMin -> [[a]] -> Maybe (Int, (a, a))

Get the elbow point (and its index) of a two-dimensional distribution. Uses the Max or Min to identify convex / concave point, depending on the choice (for positive x and y, top left hump would be Max, bottom right dip would be Min). Matrix rows are observations, columns are dimensions. List of columns.

getRotationAngle :: (RealFloat a, Numeric a) => Matrix a -> Maybe a

Use the minimum and maximum points to identify the appropriate rotation in radians. Matrix rows are observations, columns are dimensions.

data MaxMin

Constructors

Max

Min