| accum | Calculate geochemical proxy accumulation rates |
| anchorTime | Anchor a floating astrochronology to a radioisotopic age |
| ar1 | Generate AR(1) surrogates |
| ar1etp | AR(1) + ETP simulation routine |
| arcsinT | Arcsine transformation of stratigraphic series |
| armaGen | Generate autoregressive moving-average model |
| asm | Average Spectral Misfit |
| astrochron-package | astrochron: A Computational Tool for Astrochronology |
| autoPlot | Automatically plot multiple stratigraphic series, with... |
| bandpass | Bandpass filter stratigraphic series |
| bergerPeriods | Obliquity and precession periods of Berger et al. (1992) |
| bicoherence | bicoherence: Calculate bispectrum and bicoherence using WOSA... |
| bioturb | Bioturbate time series using diffusion model from Guinasso... |
| calcPeriods | Calculate eccentricity, obliquity and precession periods in... |
| cb | Combine multiple vectors |
| clipIt | Create non-linear response by clipping stratigraphic series |
| confAdjust | Adjust spectrum confidence levels for multiple comparisons |
| constantSedrate | Apply a constant sedimentation rate model to transform a... |
| conv_fft | Convolution through Fast Fourier Transform |
| cosTaper | Apply cosine taper to stratigraphic series |
| cycles | Generate harmonic model |
| deconv | Wiener Deconvolution through Fast Fourier Transform |
| delPts | Interactively delete points in plot |
| demean | Remove mean value from stratigraphic series |
| detrend | Subtract linear trend from stratigraphic series |
| diffAccum | Model differential accumulation |
| divTrend | Divide by linear trend in stratigraphic series |
| dpssTaper | Apply DPSS taper to stratigraphic series |
| eAsm | Evolutive Average Spectral Misfit |
| eAsmTrack | Track ASM null hypothesis significance level minima in eASM... |
| eha | Evolutive Harmonic Analysis & Evolutive Power Spectral... |
| eTimeOpt | eTimeOpt: Evolutive implementation of TimeOpt (Meyers, 2015;... |
| eTimeOptTrack | Track eTimeOpt r2 maxima |
| etp | Generate eccentricity-tilt-precession models |
| extract | Extract record from EHA time-frequency output or eAsm output |
| flip | Flip stratigraphic series |
| freq2sedrate | Convert record of local spatial frequency (from EHA) to... |
| gausTaper | Apply Gaussian taper to stratigraphic series |
| getColor | Query R for color information |
| getData | Download file from astrochron data server |
| getLaskar | Download Laskar et al. (2004, 2011a, 2011b) astronomical... |
| hannTaper | Apply Hann taper to stratigraphic series |
| headn | List column numbers for each variable |
| hilbert | Hilbert transform of stratigraphic series |
| idPts | Interactively identify points in plot |
| imbrie | Imbrie and Imbrie (1980) ice sheet model |
| impulseResponse | Impulse response function calculation |
| insoDiff | insolation difference map using Laskar et al. (2004)... |
| insoMap | generate an insolation map using Laskar et al. (2004)... |
| insoSeries | Laskar et al. (2004) insolation calculations |
| integratePower | Determine the total power within a given bandwidth |
| iso | Isolate data from a specified stratigraphic interval |
| linage | Tune stratigraphic series to an astronomical target using... |
| linterp | Piecewise linear interpolation of stratigraphic series |
| linterpLH13 | Piecewise linear interpolation of stratigraphic series using... |
| logT | Log transformation of stratigraphic series |
| lowpass | Lowpass filter stratigraphic series |
| lowspec | Robust Locally-Weighted Regression Spectral Background... |
| makeNoise | Generate noise surrogates from a theoretical power spectrum |
| modelA | Example stratigraphic model series |
| mtm | Multitaper method spectral analysis |
| mtmAR | Intermediate spectrum test of Thomson et al. (2001) |
| mtmML96 | Mann and Lees (1996) robust red noise MTM analysis |
| mtmPL | Multitaper Method Spectral Analysis with Power Law (1/f) fit |
| multiTest | Adjust spectral p-values for multiple comparisons |
| mwCor | Calculate moving window correlation coefficient for two... |
| mwin | Determine 'dynamic moving window' for stratigraphic series,... |
| mwinGrid | Determine 'dynamic moving window' for stratigraphic series,... |
| mwMinMax | 'Dynamic window' moving assessment of maxima and minima in... |
| mwStats | 'Dynamic window' moving average, median and variance of... |
| mwStatsGrid | 'Dynamic window' moving average, median and variance of... |
| noKernel | Remove Gaussian kernel smoother from stratigraphic series |
| noLow | Fit and remove Lowess smoother from stratigraphic series |
| pad | Pad stratigraphic series with zeros |
| peak | Identify maxima of peaks in series, filter at desired... |
| periodogram | Simple periodogram |
| pl | Set up plots |
| plotEha | Create color time-frequency plots from eha results. |
| plS | Set default plotting parameters for vertical stratigraphic... |
| prewhiteAR | Prewhiten stratigraphic series with autoregressive filter,... |
| prewhiteAR1 | Prewhiten stratigraphic series with AR1 filter, using... |
| pwrLaw | Generate power law (1/f) noise surrogates |
| pwrLawFit | Estimate power law (1/f) fit to power spectrum |
| rankSeries | Create lithofacies rank series from bed thickness data |
| read | Read data from file |
| readMatrix | Read data matrix from file |
| repl0 | Replace values < 0 with 0 |
| replEps | Replace values <= 0 with smallest positive value |
| resample | Resample stratigraphic series |
| rmNA | Remove stratigraphic levels that contain one or more NAs |
| s | Standardize variable in stratigraphic series |
| sedRamp | Apply 'ramping' sedimentation rate model to convert time to... |
| sedrate2time | Integrate sedimentation rate curve to obtain time-space map |
| slideCor | Identify optimal spatial/temporal shift to maximize... |
| sortNave | Remove missing entries, sort data, average duplicates |
| stepHeat | Ar/Ar Geochronology: Generate an Ar/Ar age spectrum and... |
| stratPCA | Principal Component Analysis on Stratigraphic Series |
| strats | Summary statistics for stratigraphic series |
| surrogateCor | Estimate correlation coefficient and significance for... |
| surrogates | Generate phase-randomized surrogate series as in Ebisuzaki... |
| synthStrat | Synthesize stratigraphy from forcing function |
| taner | Apply Taner bandpass or lowpass filter to stratigraphic... |
| tanerFC | Apply Taner bandpass or lowpass filter to Fourier... |
| testBackground | Evaluate power spectrum false positive rates via Monte Carlo... |
| testPrecession | Astrochronologic testing via the precession amplitude... |
| testTilt | Astrochronologic testing via the obliquity amplitude... |
| timeOpt | TimeOpt: Evaluation of eccentricity-related amplitude... |
| timeOptMCMC | TimeOptMCMC: Evaluation of eccentricity-related amplitude... |
| timeOptPlot | TimeOptPlot: Generate summary figure for TimeOpt analyses |
| timeOptSim | Monte Carlo simulation for TimeOpt |
| timeOptSimPwrLaw | Monte Carlo simulation for TimeOpt, using power law (1/f)... |
| timeOptTemplate | TimeOpt analysis using variable sedimentation models |
| timeOptTemplatePlot | TimeOptTemplatePlot: Generate summary figure for... |
| timeOptTemplateSim | Simulations for timeOptTemplate |
| tones | Calculate all possible difference and combinations tones |
| traceFreq | Frequency-domain minimal tuning: Use interactive graphical... |
| tracePeak | A tool to interactively trace peak trajectories on plots |
| trackFreq | Frequency-domain minimal tuning: Use interactive graphical... |
| trackPeak | A tool to interactively select points to track peak... |
| trim | Remove outliers from stratigraphic series |
| trimAT | Remove outliers from stratigraphic series |
| trough | Identify minima of troughs in series, filter at desired... |
| tune | Tune stratigraphic series |
| unbioturb | Bioturbation removal function following the approach of Liu... |
| writeCSV | Write CSV file |
| writeT | Write tab-delimited file |
| wtMean | Ar/Ar Geochronology: calculate weighted mean age, age... |
| xplot | Generate cross-plot with kernel density estimates on axes |
| zoomIn | Dynamically explore cross-plot, zoom-in into specified region |
