HLS Vegetation Indices (HLS-VI)

Generates suite of Vegetation Indices (VI) for HLS Products.

Usage

Generating Vegetation Indices

vi_generate_indices -i INPUT_DIR -o OUTPUT_DIR -s ID_STRING

where:

• INPUT_DIR is expected to contain L30 or S30 band geotiffs.
• OUTPUT_DIR is the directory to write VI geotiffs, and will be created if it does not already exist.
• ID_STRING is the HLS granule ID basename with a pattern of HLS.{instrument}.{tile_id}.{acquisition_date}.v{version}

Generating CMR Metadata

vi_generate_metadata -i INPUT_DIR -o OUTPUT_DIR

where:

• INPUT_DIR is expected to be the same as for the vi_generate_indices command, and must contain a .cmr.xml file containing the granule's CMR metadata.
• OUTPUT_DIR is expected to be the same as for the vi_generate_indices command, and this is where the new CMR XML metadata file is written, named the same as the input XML file, but with the prefix HLS replaced with HLS-VI.

Tests

You can run tests using Docker:

make test           # Run all tests
make test-metadata  # Run only CMR and STAC metadata tests