# 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: gemi
name: Global Environment Monitoring Index
short_name: GEMI
formula: ((2.0*((N ** 2.0)-(R ** 2.0)) + 1.5*N + 0.5*R)/(N + R + 0.5))*(1.0 - 0.25*((2.0 * ((N ** 2.0) - (R ** 2)) + 1.5 *
  N + 0.5 * R)/(N + R + 0.5)))-((R - 0.125)/(1 - R))
bands:
- N
- R
domain: vegetation
theme: vegetation
concepts:
- fapar
- leaf-area-index
rank: null
display:
  colormap: rdylgn
  range:
  - -0.2
  - 0.9
references:
- url: http://dx.doi.org/10.1007/bf00031911
date_of_addition: '2021-04-07'
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: GEMI
match_tags:
- environment
- global
- index
- monitoring
- n
- r
- vegetation
status: stable