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Calculate Vegatation Index

Source: R/calc_VI.R
calc_VI.cube.Rd

Calculates Vegetation Index for a data cube of EO (surface reflectance) images

Usage

calc_VI.cube(cube, VI, scale = 1e-05)

Arguments

cube

data cube with spectral bands

VI

vegetation index

scale

scale of source surface reflectance data

Value

proxy data cube object

Details

Implemented vegetation indices:

  • NDVI = (nir-red)/(nir+red)

  • NDMI = (nir-swir1)/(nir+swir1)

  • NBR = (nir-swir2)/(nir+swir2)

  • NBR2 = (swir1-swir2)/(swir1+swir2)

  • NDSI = (green-swir1)/(green+swir1)

  • EVI = 2.5*(nir-red)/(nir+6*red-7.5*blue+1)

  • SAVI = 1.5*(nir-red)/(nir+red+0.5)

  • MSAVI = (2*nir+1-sqrt((2*nir+1)^2-8*(nir-red)))/2

Scale factor has to be applied when reflectance saved as integer instead of range [0-1]. To be checked for different endpoints