Arcgis10.1: Geo-Referencing

Aim:

To geo-reference the given topographic sheet. (Please read post on Concept of geo-reference prior to this session.) 

Procedure:

Step 1: Map Input

Identify the known co-ordinate location for the topographic sheets. In this session, the four corner Co-ordinates were identities.  Compute the Decimal Degrees for these known coordinates.

Step 2: Map Processing

·         Geo-reference using the “Geo-referencing” toolbar

·         Update the Computed decimal degrees in the respective coordinate points

·         Check for RMS error (Should be ideally zero or less than One)

·         Rectify Image and save a copy for the local drive

·         Layout map with elements of Title, Sub-Title, Scale, Arrow,  Legend and credits

Step 3: Map Display                        

Export map to Jpeg format

Conclusion:

The given topographic sheet in Geo-referenced using ArcGis.