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",
)

## Arguments

rspecdata (required) a data frame, possibly of class rspec, which contains a column containing a wavelength range, named 'wl', and spectra data in remaining columns. the minimum f value of the loess function to visualize (defaults to 0.05). the maximum f value of the loess function to visualize (defaults to 0.20). the number of curves to display on the same plot (defaults to 5). the number of spectral curves, from the data frame, to visualize (defaults to ALL). logical. if TRUE, asks for user input before changing plot pages

## Value

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

procspec()
data(sicalis)