Variable-Ring Buffer Map: Point Entities

Aim:

To create a Variable-Ring Buffer Map using the chosen Point attributes.

Procedure:

Concept:   Entities cater specific, which we can tag as “Service Areas” or “Sphere of Influence”. For Example, Post Offices that cater to particular zone, Places of religious worship that is accessible to the residents of a particular zone,…   Now, these are completely two different entities, catering for completely two different purposes. So how do we show the buffer areas for entities of these types, where the buffer zones are specific to the character? The buffer value varies or is unique to the Feature type and this needs a map that calls for representing this Uniqueness. Variable Buffer is the Tool of solution

Step 1: Map Input

Identify the Point entities component for the location dataset. For this session, Post Offices and Temples (Hindu Place of Worship) were digitized from the given topographic map of Nellore & Cuddapah Districts.  The Point Entities were saved as “Civic Areas”.

Step 2: Map Processing

• ·         Digitize the Point Entities for Selected entities. Perform Attribute Editing. “Add Field” for “Name” and “Weights”.  Specify the Name (Temples or PO) and Assign respective weights in the Attribute Window.
• ·         Locate the Buffer tool in Analysis -> Proximity, toolbox.
• ·         Define the Tool Input “Civic Areas” and now select the radial icon for “Field” choose “Weights” from the Drop Down. The Buffer will be computed for the Custom Quantity, here weights and generated as , map outputs
• ·         Click “Ok” to generate the map output

Step 3: Map Display

Create Custom Map Layout with the necessary map elements and Export map to Jpeg format

Conclusion:

Variable -Ring Buffer maps for the chosen polygon attributes are generated using ArcGis 10.1.