A comparison of raster-based travel time surfaces against vector-based network calculations as applied in the study of rural food deserts

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• 作者：Timothy Mulrooney^a ; ^{tmulroon@nccu.edu} ; Kathi Beratan^b ; ^{kkberata@ncsu.edu} ; Christopher McGinn^a ; ^{cmcginn@nccu.edu} ; Benjamin Branch^a ; ^{bbranch8@eagles.nccu.edu}
• 关键词：Food insecurity ; Food proximity ; Geographic information systems ; Raster GIS ; Travel-time ; Travel-time surface
• 刊名：Applied Geography
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：78
• 期：Complete
• 页码：12-21
• 全文大小：4016 K
• 卷排序：78

文摘

There are many ways to measure proximity to food resources. We use the raster data model to measure the proximity tenet of food insecurity. We tested the efficacy of these techniques versus vector-based standards. Results show little difference between vector and raster techniques.