RSEIS (version 2.1-6)

PSTLTcurve: Short Term/Long Term curve

Description

ST/LT ratio curve for sutomated picking routines

Usage

PSTLTcurve(y, dt = 0.008, fwlen = 125, bwlen = 125, perc = 0.05, stretch = 1000, MED = 255, PLOT = FALSE)

Arguments

y

signal

dt

deltaT (s)

fwlen

forward window

bwlen

backward window

perc

percent cut-off

stretch

stretch curve

MED

Median smoothing parameter

PLOT

logical, TRUE=PLOT

Value

• list(flag=1, ind=ix, eye=eye, mix=mix, SNR=SNR, s2=s2, rat=therat)
• flag
  flag on success
• ind
  index of pick estimate 1
• eye
  index of pick estimate 2
• mix
  index of pick estimate 3
• SNR
  Signal/Noise ratio
• s2
  sum squared
• rat
  ratio curve

Examples

require(stats)

data(CE1)
plot(CE1$x, CE1$y, type='l')

z = CE1$y[ CE1$x>5.352622 & CE1$x<5.589836]

PSTLTcurve(z, dt = CE1$dt, fwlen = 125, bwlen = 125, perc = 0.05,
stretch = 1000, MED = 255, PLOT = FALSE)