hsdar (version 0.5.1)

getNRI: Return nri-values

Description

Return normalized ratio index values giving the wavelength

Usage

getNRI(nri, wavelength)

Arguments

nri

Object of class 'Nri'

wavelength

Wavelength values where nri is returned. See details section.

Details

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.

See Also

nri, Nri

Examples

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)