traceFreq {astrochron} | R Documentation |

## Frequency-domain minimal tuning: Use interactive graphical interface to trace frequency drift

### Description

Frequency-domain minimal tuning: Use interactive graphical interface to trace frequency drift.

### Usage

```
traceFreq(spec,color=2,h=6,w=4,xmin=NULL,xmax=NULL,ymin=NULL,ymax=NULL,ydir=1,
palette=6,ncolors=100,path=1,pl=0)
```

### 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. |

`color` |
Line color for tracing. 1 = transparent black; 2 = transparent white; 3 = transparent yellow |

`h` |
Height of plot in inches. |

`w` |
Width of plot in inches. |

`xmin` |
Minimum spatial frequency to plot. |

`xmax` |
Maximum spatial frequency to plot. |

`ymin` |
Minimum depth/height to plot. |

`ymax` |
Maximum depth/height to plot. |

`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. |

`path` |
How do you want to represent the spatial frequency path?: 1=lines and points; 2=lines; 3=points |

`pl` |
An option for the color plots: 0=linear scale; 1=plot log of value, 2=normalize to maximum value |

### 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 amplitude results
out=eha(dat,output=3)
## Interactively track frequency drift
freq=traceFreq(out)
}
## End(Not run)
```

*astrochron*version 1.3 Index]