Spectral Indices are central to many aspects of remote sensing. Whether you are studying vegetation or tracking fires - you will need to compute a pixel-wise ratio of 2 or more bands. The most commonly used formula for calculating an index is the  Normalized Difference between 2 bands. Earth Engine provides a helper function  normalizedDifference()  to help calculate normalized indices, such as Normalized Difference Vegetation Index (NDVI). For more complex formulae, you can also use the  expression()  function to describe the calculation.

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The code is available in this repository under Module4/Exercise1


Última modificación: sábado, 10 de julio de 2021, 13:43