Mapping Coastal Habitat (Somiani Hor)

1. Mangroves

2. Seaweeds

3. Turbidity

4. Water

5. Sandy shores

6. Rocky shores

Use Indices to extract different feature

· NDVI for 01 and 02

Formula

(NIR-RED)/(NIR+RED)

· ND Water Index (Green-NIR)/(Green+NIR)

· ND Soil Index (SWIR-NIR)/ (SWIR+NIR)/

· ND Turbidity Index (Analyze the bands and make an index for this)

To map habitat

1. Stack all indices

2. run unsupervised classification

3. run supervise classification

4. Use threshold values to extract the specific features.

1. stacking

2. 2 .subset

3. Indices

4. Stack all indices

5. Classification

Save training samples as GSG (signature file. gsg)

Add two fields in attribute table

Name-text – strat editing from editor tool bar

Add names of features/class

Area-float—right click on area column, click on field calculator

Area-float—right click on area column, click on field calculator, Now multiply [{900(pixel resolution 30*30 for lansat)*count}/1000*1000}]