Data Services Directory

Spectral Indices

This service provides 16 spectral indices as images for your specified area of interest.

Spectral indices provide metrics about a range of vegetation, soil, water and other different properties. Given an area of interest, the algorithm is run using Sentinel-2 to return the indices from the start date to the optional end date. The indices produced are:

• Clay Minerals (CM),
• Enhanced Vegetation Index (EVI),
• Ferrous Minerals (FM),
• Green Vegetation Index (GVI),
• Iron Oxide (IO),
• Leaf Area Index (LAI),
• Modified Normalized Difference Water Index (MNDWI),
• Modified Triangular Vegetation Index - Improved (MTVII),
• Normalized Difference Mud Index (NDMI),
• Normalized Difference Vegetation Index (NDVI),
• Optimized Soil Adjusted Vegetation Index (OSAVI),
• Plant Senescence Reflectance Index (PSRI),
• Renormalized Difference Vegetation Index (RDVI),
• Red Edge Normalized Difference Vegetation Index (RENDVI),
• Red Green Ratio Index (RGRI) and WorldView Water Index (WWI).

The imagery is output as a series of GeoTIFF files, each with a single band representing the calculated indices. Pixel values are typically on a normalised scale (-1 to 1), although a small number of indices have different potential ranges of values. All GeoTIFF files are provided at native resolution of the inputs.