Check whether an element is maintained over time
I can show you an example of clustering to find if the observations are in the same location. Then you just need to calculate area change. There are many clustering algorithms I chose DBSCAN because ...
Download NDVI data in Excel for every country in the world from 1982 to 2016
There is already nice community tutorial for this if you want to perform in Earth Engine. You can just change the dates/regions/reducers for your own purpose. https://developers.google.com/earth-...
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