Return nri-values
Return normalized ratio index values at a given wavelength combination.
getNRI(nri, wavelength)
nri |
Object of class 'Nri' |
wavelength |
Wavelength values where nri is returned. See details section. |
Wavelength can be passed in three ways. As the result of nri_best_performance, as a data frame with two columns or as a vector of length 2. In the first two cases, the result will be a data frame (if data frames contain more than one row) with the nri-values of each pair of wavelengths. In the latter case it will be a vector.
Lukas Lehnert
data(spectral_data)
## Calculate all possible combinations for WorldView-2-8
spec_WV <- spectralResampling(spectral_data, "WorldView2-8",
response_function = FALSE)
nri_WV <- nri(spec_WV, recursive = TRUE)
## Build glm-models
glmnri <- glm.nri(nri_WV ~ chlorophyll, preddata = spec_WV)
## Return best 5 models
BM <- nri_best_performance(glmnri, n = 5, coefficient = "p.value")
## Get nri values for the 5 models
nri_BM <- getNRI(nri_WV, BM)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.