# Generated by scripts/sync_indices.py from Awesome Spectral Indices (MIT).
# DO NOT EDIT BY HAND. Edit overlays (_asi_*.yaml, _folia_*.yaml) and re-run.
# Spec: docs/spec/SPECTRAL_INDICES.md
slug: ndponi
name: Normalized Difference Pond Index
short_name: NDPonI
formula: (S1-G)/(S1+G)
bands:
- S1
- G
domain: water
theme: hydrology
concepts: []
rank: null
display:
  colormap: brbg
  range:
  - -1.0
  - 1.0
references:
- url: https://doi.org/10.1016/j.rse.2006.07.012
date_of_addition: '2022-10-03'
contributor: https://github.com/CvenGeo
platforms:
- Sentinel-2
- Landsat-OLI
- Landsat-TM
- Landsat-ETM+
- MODIS
source:
  authority: awesome-spectral-indices
  commit_sha: 7f28d3fe68af1287f7449faf0685659e73197212
  upstream_id: NDPonI
match_tags:
- difference
- g
- index
- normalized
- pond
- s1
- water
status: stable