GIS ANALYSIS AND CARTOGRAPHIC PRESENTATION OF A SITE SELECTION PROBLEM

摘要

A network can model many real systems like roads, water bodies, and contours. On the area of GIS analysis, networking has become a very useful tool. Nowadays, networks from the infrastructure of the modern world commonly occur through definable network systems: transportation and distribution of goods and services, communication, delivery of resources and energy, among others. An exercise on site selection and evaluation using the tools of Geographic Information System (GIS) is presented herein. Solution to a typical problem of regional and national governments, namely to locate potential and evaluate existing sites, is hereby given utilizing the GIS tools. Geographic and network analyses were made using Arc/Info version 7. In the geographic analysis, selection of potential sites was made based on a set of criteria - accessibility, proximity to certain natural or manmade area, among other limitations as needed. The network analysis provided answers to questions on the suitability of the selected sites and who can access the sites within a specified time or distance. Using the criteria, GIS processes such as buffering, union, erase, dissolve, and intersect narrowed down the number of possible sites. Results of the geographic and network analyses were then ranked accordingly.