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)