Faculty and Student Publications
Document Type
Article
Publication Date
7-1-2020
Abstract
© 2020 MDPI AG. All rights reserved. In the development of geographic information-based applications for mobile devices, achieving better access speed and visual effects is the main research aim. In this paper, we propose a new geographic data display method based on Geohash, namely GeohashTile, to improve the performance of traditional geographic data display methods in data indexing, data compression, and the projection of different granularities. First, we use the Geohash encoding system to represent coordinates, as well as to partition and index large-scale geographic data. The data compression and tile encoding is accomplished by Geohash. Second, to realize a direct conversion between Geohash and screen-pixel coordinates, we adopt the relative position projection method. Finally, we improve the calculation and rendering efficiency by using the intermediate result caching method. To evaluate the GeohashTile method, we have implemented the client and the server of the GeohashTile system, which is also evaluated in a real-world environment. The results show that Geohash encoding can accurately represent latitude and longitude coordinates in vector maps, while the GeohashTile framework has obvious advantages when requesting data volume and average load time compared to the state-of-the-art GeoTile system.
Relational Format
journal article
Recommended Citation
Zhou, C., Lu, H., Xiang, Y., Wu, J., & Wang, F. (2020). GeohashTile: Vector Geographic Data Display Method Based on Geohash. ISPRS International Journal of Geo-Information, 9(7), 418. https://doi.org/10.3390/ijgi9070418
DOI
10.3390/ijgi9070418
Accessibility Status
Searchable text