Categorization and Conversions for Indexing Methods of Discrete Global Grid Systems

ISPRS International Journal of Geo-Information

Ali Mahdavi Amiri¹  Faramarz Samavati¹  Perry Peterson³  Liang Steve² 

[1] Department of Computer Science, University of Calgary, 2500 University Drive N.W., Calgary, AB T2N 1N4, Canada; E-Mail:;Department of Computer Science, University of Calgary, 2500 University Drive N.W., Calgary, AB T2N 1N4, Canada; E-Mail;PYXIS Innovation Inc., 13, Windsor Street, Kingston, ON K7M 4K4, Canada; E-Mail:

关键词: Digital Earth;    indexing method;    hierarchy;    space filling curves;   

DOI  :  10.3390/ijgi4010320

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland