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Exploratory Spatial and Temporal Analysis of Drug Arrests: A Case Study of San Francisco California
This study looks at different drug arrest patterns. While extensive research has been done on crime and drug mapping, very little has been done on drug arrests as a whole and even less has been done on specific drug types. This study addresses the following questions: are all drugs arrests located in the same part of the city? Has there been a spatial and or temporal trend in each type of drug arrest? In addition, this study will explore several different spatial statistical methods to determine if any one method is more appropriate for each type of drug, and if there are any temporal trends that might be apparent for each drug. San Francisco was picked as a case study city because of its cultural association with drugs, its dramatic economic change over the past 15 years and its accessibility of crime data. The results indicate that most drug arrests happen at the same times and in the same place in the city with little variation. Marijuana is the only drug that has a significantly different spatial pattern. Each test used produced the same results and it is appropriate to use each in further analysis. Further research is needed to determine what some of the causes might be and what methods could possibly best measure the factors that influence drug activity in the city of San Francisco.
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