When analyzing areas surrounding (or ‘near’) a location (such as a school) for demographic characteristics (such as number of persons of school age, or median household income), there are a variety of choices to define what ‘near’ should be. Two of the most common ways to do this with vector analysis are to use a ‘buffer’ (such as a 1-mile buffer) or a network ‘service area’ (such as a 4-minute drive-time).If you were asked to analyze an area surrounding (‘near to’) existing Health Clinic locations (somewhere in the US) for information on the number of households and income of those households, what is the level of geographic detail and type (or source) of data that you would likely use to obtain the demographic information?Would you choose to use a ‘buffer’ or a ‘network service area’ (or another choice) to define the area ‘near’ the Emergency Rooms? Why?After defining and creating the “near” area, what analysis operation would get the information from the demographic data layer attached to the areas near each Emergency Room? Please describe the GIS analysis step (or steps) and give an example of the type of information that would be reported for each Health Clinic.

Buffer analysis: Buffering usually creates two areas: one area that is withina specified distance to…

Answered: When analyzing areas surrounding (or…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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When analyzing areas surrounding (or ‘near’) a location (such as a school) for demographic characteristics (such as number of persons of school age, or median household income), there are a variety of choices to define what ‘near’ should be. Two of the most common ways to do this with vector analysis are to use a ‘buffer’ (such as a 1-mile buffer) or a network ‘service area’ (such as a 4-minute drive-time).

1. If you were asked to analyze an area surrounding (‘near to’) existing Health Clinic locations (somewhere in the US) for information on the number of households and income of those households, what is the level of geographic detail and type (or source) of data that you would likely use to obtain the demographic information?
2. Would you choose to use a ‘buffer’ or a ‘network service area’ (or another choice) to define the area ‘near’ the Emergency Rooms? Why?
3. After defining and creating the “near” area, what analysis operation would get the information from the demographic data layer attached to the areas near each Emergency Room? Please describe the GIS analysis step (or steps) and give an example of the type of information that would be reported for each Health Clinic.

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