This presentation focuses on Creation of rastor analysis in Arcgis of a particular area A geographic information system (GIS) is a system designed to capture, store, manipulate, analyze, manage, and present spatial or geographic data.

1. RASTER ANALYSIS
Source
Add data – D drive – new folder 3 – practical data – spatial (vector) – settlement, hospital, elevation and
land use – add
Settlement Hospital
Elevation landuse
Step 1. Derive the data
a. Distance to the settlement
Arc tool box – spatial analysis tool – distance
Euclidean distance
i/p – settlement o/p – (create a new folder) disttosettle
Environment settings – processing extent – extent – same as layer elevation – ok

2. b. Distance to the hospital
Euclidean distance
i/p – hospital o/p – disttohosp
Environment settings – processing extent – extent – same as layer elevation – ok
c. Slope of elevation
Arc tool box – spatial analyst tool – surface slope
i/p – elevation o/p – slope
Environment – output coordinate – o/p coordinate system – as specified below
Select – projected coordinate – UTM – WGS 1984 – northern hemisphere – 43N – apply – ok

3. Step 2. Reclassification
Arc tool box – spatial analyst tool – reclasses
a. Reclassify (settlement)
i/p – disttosettle reclass field - value
Classify – class -10 – method – equal interval - ok – click reverse new value (we have to modify)
o/p – reclasssettle
b. Reclassify (hospital)
i/p – disttohosp reclass field - value
Classify – class - 10 – method – equal interval - ok – (no modify)
o/p – reclasshosp

4. c. Reclassify (slope)
i/p – slope reclass field - value
Classify – class - 10 – method – equal interval - ok – click reverse new value (we have to modify)
o/p – reclassslope
d. Reclassify (landuse)
i/p – landuse
reclass field – LU type – type all the given ranks, others are deleted
o/p – reclasslu

5. Step 3. Weighted and overlay
Spatial analyst tool – map algebra – raster calculator
Reclasssettle*0.5+reclasslu*0.25+reclasshosp*0.125+reclass*0.125 – ok
Step 4. Result