# 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: fdi
name: Floating Debris Index
short_name: FDI
formula: N - (RE2 + 10 * (S1 - RE2) * (lambdaN - lambdaR)/(lambdaS1 - lambdaR))
bands:
- N
- RE2
- S1
constants:
- lambdaN
- lambdaR
- lambdaS1
domain: water
theme: hydrology
concepts: []
rank: null
display:
  colormap: brbg
  range:
  - -1.0
  - 1.0
references:
- url: https://doi.org/10.1038/s41598-020-62298-z
date_of_addition: '2025-07-18'
contributor: https://github.com/guillemc23
platforms:
- Sentinel-2
source:
  authority: awesome-spectral-indices
  commit_sha: 7f28d3fe68af1287f7449faf0685659e73197212
  upstream_id: FDI
match_tags:
- debris
- floating
- index
- n
- re2
- s1
- water
status: stable