Math.Elbow

Documentation

findElbow :: (RealFloat a, Numeric a) => MinMax -> 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) => MinMax -> [[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 MinMax

Constructors

Min

Max

Instances

Read MinMax

Defined in Math.Elbow

Methods

readsPrec :: Int -> ReadS MinMax

readList :: ReadS [MinMax]

readPrec :: ReadPrec MinMax

readListPrec :: ReadPrec [MinMax]

Show MinMax

Defined in Math.Elbow

Methods

showsPrec :: Int -> MinMax -> ShowS

show :: MinMax -> String

showList :: [MinMax] -> ShowS