Simulate reflectance spectra while sweeping one trait, all others fixed

Builds a LUT where every trait is held at its default except trait, which is swept from nmin to nmax in steps of Interval, runs the canopy simulation, and plots the resulting spectra.

Usage

getSim_fromLUT(
  trait = "Cab",
  nmin = 0,
  nmax = 100,
  Interval = 10,
  psoil = 0.5,
  model = "PROSAIL",
  method = "ggplot"
)

Arguments

trait

character. Name of the trait to sweep (e.g. "Cab", "LAI"). Default "Cab".

nmin, nmax

numeric. Minimum/maximum value of trait's sweep range.

Interval

numeric. Step size between successive values of trait in the sweep.

psoil

numeric (0-1). Soil brightness factor (0 = wet soil, 1 = dry soil), mixed from ToolsRTM::dataSpec_PDB's dry/wet reference spectra.

model

character. Canopy simulation to run: "PROSAIL", "INFORM", or "PROSPECT".

method

character. "ggplot" (default) or "classical" (base-R plotting) for the spectral plot.

Value

If method = "ggplot": a list with LUT (the swept-trait LUT used) and Plot (the ggplot object). If method = "classical": just the LUT data.frame (the plot is drawn as a side effect via base graphics, not returned).

Examples

if (FALSE) { # \dontrun{
out <- getSim_fromLUT(trait = "Cab", nmin = 10, nmax = 80, Interval = 10, model = "PROSAIL")
out$Plot
} # }