FILT.spread: Filter trace with a spread of filters

In RSEIS: Seismic Time Series Analysis Tools

Filter trace with a spread of filters

Description

Show a time series and a spread of user defined filters to show signal at a variety of bandwidths.

Usage

FILT.spread(x, y, dt, fl = fl, fh = fh, sfact = 1,
 WIN = NULL, PLOT = TRUE, TIT = NULL, TAPER = 0.05,
 POSTTAPER=0.05, RM=FALSE, zp=TRUE )

Arguments

x	x-axis
y	y-amplitude
dt	delta-t, sec
fl	vector of low frequency cut offs
fh	vector of high frequency cut offs
sfact	scale factor, 0,1
WIN	xlimits to constrain plotting
PLOT	logical, plotting
TIT	title
TAPER	taper data prior to filter, percent cosine, default=NULL
POSTTAPER	taper output after filter, percent cosine, default=0.05
RM	Remove mean value from trace, default=FALSE
zp	zero phase filter, default=TRUE

Details

Use the TAPER and POSTTAPER to reduce the edge effects prior to and after filtering.

Value

list:

FMAT	matrix of time series filtered
Notes	Notes for filter of each element of FMAT

Author(s)

Jonathan M. Lees<[e-mail]>

See Also

butfilt, PLOT.MATN

Examples

data(KH)
dt  <-  KH$dt[1]

y  <-   KH$JSTR[[1]]

x  <-   seq(from=0, by=dt, length=length(y))



fl <- rep(1/100, 5)
fh <- 1/c(1,2,5,10,20)

FILT.spread(x, y, dt, fl = fl, fh = fh, sfact = 1,
   WIN = NULL, PLOT = TRUE, TIT = NULL, TAPER = 0.05)

RSEIS documentation built on Aug. 19, 2023, 5:07 p.m.