Categorization and Conversions for Indexing Methods of Discrete Global Grid Systems

Digital Earth frameworks provide a tool to receive, send and interact with large location-based datasets, organized usually according to Discrete Global Grid Systems (DGGS). In DGGS, an indexing method is used to assign a unique index to each cell of a global grid, and the datasets corresponding to...

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Bibliographic Details
Published inISPRS international journal of geo-information Vol. 4; no. 1; pp. 320 - 336
Main Authors Amiri, Ali Mahdavi, Samavati, Faramarz, Peterson, Perry
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.03.2015
Subjects
Conversion
Digital
Digital Earth
Earth
hierarchy
Indexing
indexing method
Interoperability
space filling curves
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Summary:Digital Earth frameworks provide a tool to receive, send and interact with large location-based datasets, organized usually according to Discrete Global Grid Systems (DGGS). In DGGS, an indexing method is used to assign a unique index to each cell of a global grid, and the datasets corresponding to these cells are retrieved or allocated using this unique index. There exist many methods to index cells of DGGS. Toward facility, interoperability and also defining a "standard" for DGGS, a conversion is needed to translate a dataset from one DGGS to another. In this paper, we first propose a categorization of indexing methods of DGGS and then define a general conversion method from one indexing to another. Several examples are presented to describe the method.
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ISSN:2220-9964
2220-9964
DOI:10.3390/ijgi4010320