Abstract:
Parcel maps facilitate administration, Zoning, Flood determination, Real
Estate, Service territories, Financial services, Tax, Utilities, Building and site
development, lake and stream erosion control, Planning, Design and construction of
roads, public works etc. Understanding actual parcel boundaries significantly improves
the positional accuracy of property location. Positional accuracy is a measurement how
close are the property location features representing the true position on Earth. Knowing
actual parcel boundaries significantly improves the accuracy of parcel data.
This study mainly focuses on implementation of GIS technology in parcel
mapping process and discussing various methods on creation and maintaining of high
level accuracy of digital parcel data. The methodology of creating digital parcel map
depends on the availability and quality of the source maps, application software
availability, requirements for quality and completeness of the data. In this context
CoreLogic internally developed many customized GIS tools and various methods in
AutoCAD Map and ArcGIS environment for parcel mapping, these methods plays vital
role in creation of new of parcel map and updating large quantity of existing parcel
map. These method which includes Geo-referencing, vector based Geo-reference,
COGO (Coordinate Geometry), Tally methods, Object ID cross checking, Hathways
tool, ET tool, APN Attribution, Spatial Unique ID Creation, Multiple Stack Creation
Tool, Arc Google Synchronize Tool, Simplification of Raw Data, Simplification of
Projection Setting System, Color Code Check, Data base check etc. The main aim of
this study is to analyze various methods in parcel mapping and simplification of the
process to improve daily team productivity and to meet high data accuracy as per
National Standard for Spatial Data Accuracy (NSSDA).
