Start with True colour image (Red: band 3, Green: Band 2, Blue: Band 1)
Run Raster Calculator
NDVI Formula : (NIR - R)/ (NIR + 3) = (Band 4 – Band 3)/ (Band 4 + Band 3)
Right Click the NDVI image layer and click ‘Edit PCT’
Delete all classes and remain four classes of WATER, BUILT-UP AREA, BARE SOIL, and VEGETATION
Final NDVI map
Add Legend, title, a North Arrow, and a Scale bar
