NDWI: Normalized Difference Water Index

In VegSpecIndex: Vegetation and Spectral Indices for Environmental Assessment

Normalized Difference Water Index

Description

The values of the Normalized Difference Water Index (NDWI) are strongly dependent on the water content in the landscapes. Hence, the NDWI serves as an accurate indicator of the water areas and water bodies (rivers, lakes, estuaries, deltas). The NDWI is derived from the NIR and Green bands using the original formula as a ratio of Green and NIR spectral bands (Lemenkova & Debeir, 2023).

Usage

NDWI (GREEN, NIR)

Arguments

GREEN	Green spectral band
NIR	Near-infra red spectral band

Value

Normalized Difference Water Index

References

Lemenkova, P., & Debeir, O. (2023). Computing vegetation indices from the satellite images using GRASS GIS scripts for monitoring mangrove forests in the coastal landscapes of Niger Delta, Nigeria. Journal of Marine Science and Engineering, 11(4), 871.

Examples

NDWI (0.058156, 0.14628)

VegSpecIndex documentation built on April 4, 2025, 4:28 a.m.