Geoscience Reference
In-Depth Information
14
CHAPTER
Fuzzy Set and Spatial Analysis Techniques for
Evaluating Thematic Accuracy of a Land-Cover Map
Sarah R. Falzarano and Kathryn A. Thomas
CONTENTS
14.1 Introduction...........................................................................................................................189
14.1.1 Accuracy Assessment ...............................................................................................189
14.1.2 Analysis of Reference Data .....................................................................................190
14.1.2.1 Binary Analysis .........................................................................................190
14.1.2.2 Fuzzy Set Analysis....................................................................................191
14.1.2.3 Spatial Analysis.........................................................................................191
14.2 Background...........................................................................................................................192
14.3 Methodology.........................................................................................................................192
14.3.1 Reference Data .........................................................................................................192
14.3.2 Binary Analysis ........................................................................................................192
14.3.3 Fuzzy Set Analysis ...................................................................................................192
14.3.4 Spatial Analysis ........................................................................................................194
14.4 Results...................................................................................................................................196
14.4.1 Binary Analysis ........................................................................................................196
14.4.2 Fuzzy Set Analysis ...................................................................................................196
14.4.3 Spatial Analysis ........................................................................................................196
14.5 Discussion.............................................................................................................................198
14.6 Summary...............................................................................................................................204
References ......................................................................................................................................204
Appendix A: Arizona Gap Analysis Classification System ..........................................................206
14.1 INTRODUCTION
14.1.1
Accuracy Assessment
Accuracy assessments of thematic maps have often been overlooked. With the increasing pop-
ularity and availability of geographic information systems (GIS), maps can readily be produced
with minimal regard for accuracy. Frequently, a map that looks good is assumed to be 100% accurate.
189
