Normalized Difference Vegetation Index
Today’s topic: NDVI. This is another post that started life as a thread over on mastodon. What the heck is that? It’s an acronym (sorry) it stands for normalized difference vegetation index. Short version it’s a proxy for how much healthy plant life there is. It will be a number between -1 and 1. -1 being a clean concrete slab or similar. 1 being an impossibly healthy rainforest canopy. The way this one works is comparing the difference between absorption of near infrared light and red light....