EDR: ED radiative transfer module (EDR) wrapper function
In ashiklom/PEcAnRTM: PEcAn functions used for radiative transfer modeling

This function provides a convenient way to call the ED radiative transfer module (EDR, which simulates full spectral return of an ED patch for a given point in time) directly from R.

EDR(
  img_path,
  ed2in_path,
  spectra_list,
  trait.values,
  soil_reflect_path = system.file("extdata", "soil_reflect_par.dat", package =
    "PEcAnRTM"),
  wood_reflect_path = system.file("extdata", "wood_reflect_par.dat", package =
    "PEcAnRTM"),
  par.wl = 400:2499,
  nir.wl = 2500,
  edr_exe_path = NULL,
  output.path = dirname(normalizePath(ed2in_path, mustWork = TRUE)),
  settings = list(model = list(revision = "git", config.header = NULL)),
  singularity_args = list(),
  clean = FALSE,
  stderr = TRUE,
  verbose_error = TRUE,
  ...
)

`img_path`	Path to Singularity container (usually a `.simg` file)
`ed2in_path`	Path to ED2IN file.
`spectra_list`	List of spectral data matrices. Names must exactly match the PFTs given in `trait.values`. Each item must be a matrix of reflectance (labeled 'R' or 'reflectance') and transmittance (labeled 'T' or 'transmittance') values. If the matrix is not of class `spectra` (see `spectra()`), it must also have a column of wavelength values (labeled 'wl'). Such a matrix is returned by default by all versions of PROSPECT in this package.
`trait.values`	Named, hierarchical list of trait values for generating config.xml file. Names must be PFTs, and must exactly match names of `spectra_list`.
`soil_reflect_path`	Path to soil reflectance file (defaults to spectra in package `extdata`)
`wood_reflect_path`	Path to wood reflectance file (defaults to spectra in package `extdata`)
`par.wl`	Vector of wavelengths defining PAR region
`nir.wl`	Vector of wavelengths defining NIR region
`edr_exe_path`	If `img_path` is `NULL`, a full path to the EDR executable. Ignored otherwise.
`output.path`	Directory in which to execute the run. Defaults to `dirname(ed2in_path)`.
`settings`	PEcAn settings list. Default is `list(model = list(revision = "git", config.header = NULL))`.
`singularity_args`	Additional arguments to be passed to `singularity run` (before)
`clean`	Logical. If `TRUE`, remove all files generated by this function (e.g. cloned history file, ED2IN, output HDF files).
`stderr`	Logical. If `TRUE` (default), internalize `system2` results as R character vector. `TRUE` is recommended because it allows EDR to check its execution and to run more quietly.
`verbose_error`	Logical. If `TRUE` (default), spit out the full ED if EDR execution fails.
`...`	Additional arguments to `system2`