Invert_PROSPECT_subdomain: Function performing PROSPECT inversion on a spectral subset...

In jbferet/prospect: PROSPECT leaf radiative transfer model and inversion routines

Function performing PROSPECT inversion on a spectral subset combining an initial feature subset (Initial_Features) and an additional feature subset (New_Features)

Description

Function performing PROSPECT inversion on a spectral subset combining an initial feature subset (Initial_Features) and an additional feature subset (New_Features)

Usage

Invert_PROSPECT_subdomain(
  New_Features,
  Refl,
  Tran,
  SpecPROSPECT,
  lambda,
  BiochTruth,
  Target,
  Parms2Estimate,
  Initial_Features,
  InitValues = data.frame(CHL = 40, CAR = 10, ANT = 0.1, BROWN = 0.01, EWT = 0.01, LMA =
    0.01, PROT = 0.001, CBC = 0.009, N = 1.5, alpha = 40),
  PROSPECT_version = "D",
  MeritFunction = "Merit_PROSPECT_RMSE",
  Est_Brown_Pigments = FALSE,
  Est_alpha = FALSE,
  xlub = data.frame(CHL = c(1e-04, 150), CAR = c(1e-04, 25), ANT = c(0, 50), BROWN = c(0,
    4), EWT = c(1e-08, 0.1), LMA = c(1e-06, 0.06), PROT = c(1e-07, 0.006), CBC = c(1e-06,
    0.054), N = c(0.5, 4), alpha = c(10, 90)),
  verbose = FALSE
)

Arguments

New_Features	spectral bands (in nm) to be added to the Initial_Features
Refl	numeric. matrix of reflectances (n spectral bands x p samples)
Tran	numeric. matrix of transmittances (n spectral bands x p samples)
SpecPROSPECT	list. Optical constants for a spectral domain broader than spectral_domain
lambda	numeric. spectral bands corresponding to reflectance and transmittance measurements
BiochTruth	numeric. value of biophysical/biochemical parameter to estimate for each sample
Target	character. name of the parameter. Should be picked between "CHL", "CAR", "ANT", "BROWN", "EWT", "PROT", "CBC", "N"
Parms2Estimate	character vector. Parameters to estimate (can be 'ALL')
Initial_Features	Initial feature set (in nm)
InitValues	data.frame. Default values of PROSPECT parameters. During optimization, they are used either as initialization values for parameters to estimate, or as fix values for other parameters. Parameters not compatible with PROSPECT_version are not taken into account.
PROSPECT_version	character. Version of prospect model used for the inversion: 'D' or 'PRO'
MeritFunction	character. name of the function to be used as merit function with given criterion to minimize (default = RMSE)
Est_Brown_Pigments	boolean. should brown pigments be accounted for during inversion?
Est_alpha	boolean. should alpha be accounted for during inversion?
xlub	data.frame. Boundaries of the parameters to estimate. The data.frame must have columns corresponding to Parms2Estimate first line being the lower boundaries and second line the upper boundaries.
verbose	boolean. set to TRUE to display sample number to be inverted

Value

list containing estimated value of the target and RMSE compared to measured value

jbferet/prospect documentation built on Feb. 10, 2025, 9:35 a.m.