NDVI {agrifeature}

NDVI

Description

This function calculate NDVI value from input near-infrared (NIR) and red bands images. If change the input from red band into green or red-edge band values, it will return GNDVI or NDRE values.

Usage

NDVI(NIR, R)

Arguments

NIR

a dataframe or matrix contains NIR band values.

R

a dataframe or matrix contains red band values, NIR and R should have same class and dimension..

Value

A matrix or dataframe(depends on the class of NIR and R).

References

De Swaef, T., Maes, W. H., Aper, J., Baert, J., Cougnon, M., Reheul, D., ... & Lootens, P. (2021). Applying RGB-and thermal-based vegetation indices from UAVs for high-throughput field phenotyping of drought tolerance in forage grasses. Remote Sensing, 13(1), 147.