# 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: ri4xs
name: SPOT HRV XS-based Redness Index 4
short_name: RI4XS
formula: (R**2.0)/(G**4.0)
bands:
- R
- G
domain: soil
theme: soil
concepts: []
rank: null
display:
  colormap: ylorbr
  range:
  - 0.0
  - 1.0
references:
- url: https://doi.org/10.1016/S0034-4257(98)00030-3
date_of_addition: '2022-11-20'
contributor: https://github.com/davemlz
platforms:
- Sentinel-2
- Landsat-OLI
- Landsat-TM
- Landsat-ETM+
- MODIS
- Planet-Fusion
source:
  authority: awesome-spectral-indices
  commit_sha: 7f28d3fe68af1287f7449faf0685659e73197212
  upstream_id: RI4XS
match_tags:
- based
- g
- hrv
- index
- r
- redness
- soil
- spot
status: stable