rdp

package

v0.188.0 Latest Latest Go to latest Published: Oct 25, 2022 License: MIT Imports: 6 Imported by: 0

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func DownSampleRetention(ipdata []Point, startIndex int64, endIndex int64, weights []float64) []float64

func FindFarthestPoint(line ConnectLine, ipdata []Point) (farthestPointIndex int, farthestPointDistanceFromLine float64)

type ConnectLine struct {
	Starting Point
	Ending   Point
}

func (l ConnectLine) Coefficients() (a, b, c float64)

type Point struct {
	// contains filtered or unexported fields
}

func DownSampleIpdata(ipdata []Point, epsilon float64) []Point

func DownSampleIpdataAuto(ipdata []Point) []Point

type Rdp struct {
	// contains filtered or unexported fields
}

func New(timeColumn string, valColumn string, threshold float64, retentionPercent float64, alloc memory.Allocator) *Rdp

func (r *Rdp) Do(vs *array.Float, ts *array.Float) (*array.Int, *array.Float, error)

func (r *Rdp) SplitCoordinates(sampledPoints []Point) (*array.Int, *array.Float)

func (r *Rdp) ToPoints() []Point