ndvi

Normalized difference vegetation index

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General description

The normalized difference vegetation index, abbreviated NDVI, is defined as
$$NDVI := \mathtt{Index}(B8,B4) = \frac{B8-B4}{B8+B4}.$$

It is a good proxy for live green vegetation; see [1] for details.

Color legend

NDVI range	HTLM color code	Color
NDVI < -0.2	#000000
-.2 < NDVI ≤ 0	#a50026
0 < NDVI ≤ .1	#d73027
.1 < NDVI ≤ .2	#f46d43
.2 < NDVI ≤ .3	#fdae61
.3 < NDVI ≤ .4	#fee08b
.4 < NDVI ≤ .5	#ffffbf
.5 < NDVI ≤ .6	#d9ef8b
.6 < NDVI ≤ .7	#a6d96a
.7 < NDVI ≤ .8	#66bd63
.8 < NDVI ≤ .9	#1a9850
.9 < NDVI ≤ 1.0	#006837

References

[1] Wikipedia, Normalized Difference Vegetation Index . Accessed on October 4th 2017.