A COMPARISON BETWEEN
SNAPSHOT AND COMPOSITE CHANGE DATA

by

 

MARK G. SCOTT

A research paper submitted in partial fulfillment of the requirements for the degree of
MASTER OF SCIENCE in GEOGRAPHY Portland State University 2001


TABLE OF CONTENTS

 

CHAPTER 1 TIME AND SPATIAL DATA

1.1 Cartographic Time and Space

1.2 Sampling Rates

 

CHAPTER 2 THE STATE OF CHANGE DETECTION IN GIS

2.1 Snapshots

2.2 Integrating Time Data with Spatial Data

Space-Time Composites
Fragmentation and Aggregation

2.3 Measuring Time, Space, and Theme

2.4 Applications

 

CHAPTER 3 SURFACE WATER CHANGES IN PORTLAND OREGON 1880 - 2000

3.1 Historic Map Sources in Portland Oregon

3.2 Converting map sources into GIS

3.3 Attribute Data

3.4 Temporal Join

3.5 Evaluating the data model

 

CHAPTER 4 LAND COVER CHANGES IN THE GRAY'S RIVER

4.1 Historic Map Sources in the Gray's River

4.2 Converting map sources into GIS

4.3 Data development

4.4 Query Development

4.5 Evaluating the data model

 

CHAPTER 5 CONCLUSION

5.1 Recommendations for Future Use