R: Short-term/Long-term Average curve

STLTcurve {RSEIS} | R Documentation

## Short-term/Long-term Average curve

### Description

Get short-term average long-term verage ratio curve for picking

### Usage

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

### Arguments

`y` | signal
`dt` | sample rate
`fwlen` | forward window, number of samples
`bwlen` | back window length, number of samples
`stretch` | stretch multiplier
`MED` | median smoother
`PLOT` | logical, TRUE=plot diagnostics

### Details

Uses C-code and fast tanking algorithm written at UW

### Value

sample to significant change in ratio curve

### Author(s)

Jonathan M. Lees<jonathan.lees.edu>

### See Also

PSTLTcurve

### Examples

    data(CE1)

    y  = CE1$y

    DT = CE1$dt

    sy = STLTcurve(y, dt=DT, fwlen =  25,  bwlen  = 25,
    stretch=1000, MED=255, PLOT=FALSE)

    par(mfrow=c(2,1))

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

[Package RSEIS version 3.7-4 Index]