eewgo

README

eewgo

An EEW (Earthquake Early Warning) library implemented in pure Go.

Documentation

Index

• func CarlStaTrig(a []float64, nsta, nlta int, ratio, quiet float64) []float64
• func ClassicStaLta(a []float64, nsta, nlta int) []float64
• func DelayedStaLta(a []float64, nsta, nlta int) []float64
• func RecursiveStaLta(a []float64, nsta, nlta int) []float64
• func TriggerOnset(charfct []float64, thres1, thres2 float64, maxLen int, maxLenDelete bool) [][]int
• func ZDetect(a []float64, nsta int) []float64
• type Filter
  • func NewFilter() (Filter, error)
  • func (f *Filter) Butterworth(data []float64, poles int, delta, lowCorner, highCorner float64, ...) ([]float64, error)
  • func (f *Filter) ChebyshevI(data []float64, poles int, delta, lowCorner, highCorner, ripple float64, ...) ([]float64, error)
  • func (f *Filter) ChebyshevII(data []float64, poles int, delta, lowCorner, highCorner, ripple float64, ...) ([]float64, error)
• type PassbandType

Functions

func CarlStaTrig

func CarlStaTrig(a []float64, nsta, nlta int, ratio, quiet float64) []float64

Computes the carlSTAtrig characteristic function. Translated from Obspy. https://docs.obspy.org/tutorial/code_snippets/trigger_tutorial.html#carl-sta-trig

func ClassicStaLta

func ClassicStaLta(a []float64, nsta, nlta int) []float64

Computes the standard STA/LTA from a given input array a. The length of the STA is given by nsta in samples, respectively is the length of the LTA given by nlta in samples. Translated from Obspy. https://docs.obspy.org/tutorial/code_snippets/trigger_tutorial.html#classic-sta-lta

func DelayedStaLta

func DelayedStaLta(a []float64, nsta, nlta int) []float64

Delayed STA/LTA. Translated from Obspy. https://docs.obspy.org/tutorial/code_snippets/trigger_tutorial.html#delayed-sta-lta

func RecursiveStaLta

func RecursiveStaLta(a []float64, nsta, nlta int) []float64

Recursive STA/LTA, translated from Obspy. https://docs.obspy.org/tutorial/code_snippets/trigger_tutorial.html#recursive-sta-lta

func TriggerOnset

func TriggerOnset(charfct []float64, thres1, thres2 float64, maxLen int, maxLenDelete bool) [][]int

func ZDetect

func ZDetect(a []float64, nsta int) []float64

Z-detector. Translated from Obspy. https://docs.obspy.org/tutorial/code_snippets/trigger_tutorial.html#z-detect

Types

type Filter

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

func NewFilter

func NewFilter() (Filter, error)

func (*Filter) Butterworth

func (f *Filter) Butterworth(data []float64, poles int, delta, lowCorner, highCorner float64, passbandType PassbandType) ([]float64, error)

func (*Filter) ChebyshevI

func (f *Filter) ChebyshevI(data []float64, poles int, delta, lowCorner, highCorner, ripple float64, passbandType PassbandType) ([]float64, error)

func (*Filter) ChebyshevII

func (f *Filter) ChebyshevII(data []float64, poles int, delta, lowCorner, highCorner, ripple float64, passbandType PassbandType) ([]float64, error)

type PassbandType

type PassbandType = int

const (
	LOWPASS PassbandType = iota
	HIGHPASS
	BANDPASS
)