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Map Cloud Free Maximum Value Composites

Documentation

Create a cloud-free mosaic using the maximum index cloud-free pixel at each point. For example using the peak NDVI pixel, which will result in an rgb image of the peak growing season.

Normalized Difference Vegetation Index (NDVI) is the most common vegetation index where NDVI = (NIR-Red) / (NIR+Red). Values of NDVI are typically: 0.6 to 0.9 (dense vegetation), 0.2 to 0.5 (grasslands), -0.1 to 0.1 (bare soil, snow), -1.0 (deep water).

Tutorial

  1. Head to the ODC Sandbox (click here) and login with GitHub.

  2. Open the /examples folder.

  3. Open and run the /examples/Landing_Page.ipynb notebook block by block.

  4. In block [2], use the map interface to draw a small area of interest, and select a time frame.

  5. Review the number of tiles that will be downloaded and click "Query Cube". Less than 100 will run quickly.
  6. Run block [3], 'band_indices_aws_landsat8', and calculate a Maximum NDVI Mosaic for a small region inside your previous bounds.

 

Code/Python Notebooks

GitHub Resources