NDVI is a measure of the state of plant health based on how the plant reflects light at certain frequencies (some waves are absorbed and others are reflected) due to chlorophyll
NDVI is a fancy name for simple formula = (NIR – RED)/ (NIR + RED), where
NIR = reflection in the near-infrared spectrum (around 832.8-864.7 nano meters)
RED = reflection in the red range of the spectrum (around 664.6 nano meters)
Draw a shape and wait for the NDVI Analysis Chart to be generated