Results 11 to 20 of about 44,397 (261)
The Expression of Discretization Line and Error Analysis in Discrete Global Grid System
Procedia Environmental Sciences, 2011 AbstractThe discretization error of line in discrete global grid system is a major factor which affect the precision of discretization line and accuracy of the result of the spatial analysis. The error source of discretization of line were analysed firstly in this article.
Tao, Ming +3 more
exaly +4 more sources
ISPRS International Journal of Geo-Information, 2021 Although a Discrete Global Grid (DGG) is uniform in its initial subdivision, its geometric deformation increases with the level of subdivisions. The Goodchild Criteria are often used to evaluate the quality of DGGs.
Zheng Wang +5 more
doaj +4 more sources
The rHEALPix Discrete Global Grid System [PDF]
IOP Conference Series: Earth and Environmental Science, 2016 In light of the new standard for Discrete Global Grid Systems (DGGS) currently being proposed by the Open Geospatial Consortium (OGC), we revisit our earlier work on defining the rHEALPix DGGS. This paper briefly restates the definition of the rHEALPix DGGS and shows how the cell geometries, and schema for cell identifiers are both compliant with the ...
Gibb, Robert +2 more
core +5 more sources
Drivers of global irrigation expansion: the role of discrete global grid choice [PDF]
Hydrology and Earth System SciencesGlobal statistical irrigation modeling relies on geospatial data and traditionally adopts a discrete global grid based on longitude–latitude reference. However, this system introduces area distortion, which may lead to biased results.
S. Wagner +5 more
doaj +4 more sources
Wāhi, a discrete global grid gazetteer built using linked open data
International Journal of Digital Earth, 2017 Discrete global grid systems have become an important component of Digital Earth systems. However, previously there has not existed an easy way to map between named places (toponyms) and the cells of a discrete global grid system. The lack of such a tool
Benjamin Adams
doaj +2 more sources
THE TRANSFORM BETWEEN GEOGRAPHIC COORDINATES AND LOCATION CODES OF APERTURE 4 HEXAGONAL GRID SYSTEM [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017 Discrete global grid system is a new data model which supports the fusion processing of multi-source geospatial data. In discrete global grid systems, all cell operations can be completed by codes theoretically, but most of current spatial data are in ...
R. Wang, J. Ben, J. Ben, Y. Li, L. Du
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An Information Fusion Model between GeoSOT Grid and Global Hexagonal Equal Area Grid
ISPRS International Journal of Geo-Information, 2022 In order to cope with the rapid growth of spatiotemporal big data, data organization models based on discrete global grid systems have developed rapidly in recent years.
Qingmei Li +4 more
doaj +2 more sources
Applied open-source Discrete Global Grid Systems
AGILE: GIScience Series, 2022 Abstract. Discrete Global Grid Systems (DGGS) are spatial reference systems that use a hierarchical tessellation of cells to partition and address the globe and provide alternative spatial data format and indexing methods as compared to traditional vector and raster spatial data.
Alexander Kmoch +3 more
openaire +3 more sources
ISPRS International Journal of Geo-Information, 2021 With the rapid development of earth observation, satellite navigation, mobile communication, and other technologies, the order of magnitude of the spatial data we acquire and accumulate is increasing, and higher requirements are put forward for the ...
Yue Ma +6 more
doaj +2 more sources
International Journal of Digital Earth, 2022 Although research on the discrete global grid systems (DGGSs) has become an essential issue in the era of big earth data, there is still a gap between the efficiency of current encoding and operation schemes for hexagonal DGGSs and the needs of practical
Long Zhao +4 more
doaj +2 more sources