NDVI | NDBI | NDWI | Vegetation/Forest Cover/Buildup/Water calculation Map in ArcGIS скачать в хорошем качестве

NDVI | NDBI | NDWI | Vegetation/Forest Cover/Buildup/Water calculation Map in ArcGIS

How to NDVI in arcGIS. Hope you will learn easily how to do NDVI for your study area. NDVI Calculation Equation: NDVI=(PIR-R)/(PIR+R) In Landsat 8, NDVI=(B5-B4)/(B5+B4) In Landsat 4-7, NDVI=(B4-B3)/(B4+B3) Normalized Difference Built-up Index(NDBI) describe the Built-up density of any Geographic area. NDBI is calculated as a ratio between the short wave infrared (SWIR) and near infrared (NIR) and have indices range from -1 to 1. Formula for NDBI NDBI=(SWIR-NIR)/(SWIR+NIR) NDBI for Landsat 8, NDBI=(Band 6-Band 5)/(Band 6+Band 5) NDBI for Landsat 7, NDBI=(Band 5-Band 4)/(Band 5+Band 4) You can use band 7 because both of them are SWIR band. How to NDWI/ Normalize Difference Water Index for your study area. Normalize Difference Water Index (NDWI) is use for the water bodies analysis. The index uses Green and Near infra-red bands of remote sensing images. Higher NDWI values indicate sufficient moisture, while a low value indicates water stress. NDWI Formula, NDWI= (Green-NIR) / (Green+NIR) For Landsat 8, NDWI= (Band 3-Band 5) / (Band 3+ Band 5)