trackFreq {astrochron} | R Documentation |

## 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

### 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*version 1.3 Index]