Plots spectral curves with various levels of loess smoothing to help decide which
loess parameters are best for subsequently smoothing the data (e.g. via `procspec()`

).

plotsmooth( rspecdata, minsmooth = 0.05, maxsmooth = 0.2, curves = 5, specnum = "ALL", ask = TRUE )

rspecdata | (required) a data frame, possibly of class |
---|---|

minsmooth | the minimum f value of the loess function to visualize (defaults to |

maxsmooth | the maximum f value of the loess function to visualize (defaults to |

curves | the number of curves to display on the same plot (defaults to |

specnum | the number of spectral curves, from the data frame, to visualize (defaults to |

ask | logical. if |

Series of plot with curves processed with varying level of loess smoothing

Pierre-Paul Bitton bittonp@uwindsor.ca

# Load reflectance spectra data(sicalis) # Visualise the spectral reflectance curves across a range of smoothing levels plotsmooth(sicalis, minsmooth = 0.05, maxsmooth = 0.1, curves = 7, specnum = 6)