trackFreq: Frequency-domain minimal tuning: Use interactive graphical...

In astrochron: A Computational Tool for Astrochronology

Frequency-domain minimal tuning: Use interactive graphical interface and sorting to track frequency drift

Description

Frequency-domain minimal tuning: Use interactive graphical interface and sorting algorithm to track frequency drift.

Usage

trackFreq(spec,threshold=NULL,pick=T,fmin=NULL,fmax=NULL,dmin=NULL,dmax=NULL,xmin=NULL,
          xmax=NULL,ymin=NULL,ymax=NULL,h=6,w=4,ydir=1,palette=6,ncolors=100,genplot=T,
          verbose=T)

Arguments

spec	Time-frequency spectral results to evaluate. Must have the following format: column 1=frequency; remaining columns (2 to n)=power, amplitude or probability; titles for columns 2 to n must be the location (depth or height). Note that this format is ouput by function eha.
threshold	Threshold level for filtering peaks. By default all peak maxima reported.
pick	Pick the peaks of interest using a graphical interface? (T or F). Only activated if genplot=T.
fmin	Minimum frequency for analysis.
fmax	Maximum frequency for analysis.
dmin	Minimum depth/height for analysis. NOT ACTIVATED YET!
dmax	Maximum depth/height for analysis. NOT ACTIVATED YET!
xmin	Minimum frequency for PLOTTING.
xmax	Maximum frequency for PLOTTING.
ymin	Minimum depth/height for PLOTTING.
ymax	Maximum depth/height for PLOTTING.
h	Height of plot in inches.
w	Width of plot in inches.
ydir	Direction for y-axis in plots (depth or height). -1 = values increase downwards (slower plotting!), 1 = values increase upwards.
palette	What color palette would you like to use? (1) rainbow, (2) grayscale, (3) blue, (4) red, (5) blue-white-red, (6) viridis
ncolors	Number of colors to use in plot.
genplot	Generate summary plots? (T or F)
verbose	Verbose output? (T or F)

See Also

eha and traceFreq

Examples

 ## Not run: 
# Check to see if this is an interactive R session, for compliance with CRAN standards.
# YOU CAN SKIP THE FOLLOWING LINE IF YOU ARE USING AN INTERACTIVE SESSION.
if(interactive()) {

# Generate example series with 3 terms using function 'cycles'.
# Then convert from time to space with sedimentation rate that increases from 1 to 5 cm/ka, using
# function 'sedramp'.
# Finally interpolate to median sampling interval using function 'linterp'.
dat=linterp(sedRamp(cycles(freqs=c(1/100,1/40,1/20),start=1,end=2500,dt=5)))

# EHA anlaysis, output probability results
out=eha(dat,output=4)

## Isolate peaks with probability >= 0.8
freq=trackFreq(out,0.8)

}
 
## End(Not run)

astrochron documentation built on Sept. 30, 2024, 9:14 a.m.