Results 1 to 10 of about 3,282 (167)
Dynamic Wildfire Navigation System
ISPRS International Journal of Geo-Information, 2019 Wildfire, a natural part of many ecosystems, has also resulted in significant disasters impacting ecology and human life in Australia. This study proposes a prototype of fire propagation prediction as an extension of preceding research; this system is ...
Mitsuhiro Ozaki +2 more
doaj +1 more source
Geoforum Perspektiv, 2003 SQL er et vidt udbredt værktøj inden for databaser. For os, der arbejder med geografiske data, er databaser typisk også en del af vores arbejdsområde.
Peter Horsbøll Møller
doaj +1 more source
COMPARATIVE ANALYSIS OF DATA STRUCTURES FOR STORING MASSIVE TINS IN A DBMS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 Point cloud data are an important source for 3D geoinformation. Modern day 3D data acquisition and processing techniques such as airborne laser scanning and multi-beam echosounding generate billions of 3D points for simply an area of few square ...
K. Kumar, H. Ledoux, J. Stoter
doaj +1 more source
A PostgreSQL/PostGIS Implementation for the Sightseeing Tour Planning Problem
Jurnal Rekayasa Elektrika, 2013 This article discusses a procedure for finding the best multi stops route for sightseeing tour through a road network. The procedure involves building a database containing nodes and road network in PostgreSQL, calculating the shortest distance between a
Ardiansyah ., Ruslan Rainis
doaj +1 more source
PostGIS-powered proximity queries: implementation and Google Maps visualization [PDF]
PeerJ Computer ScienceLocation-based services require efficient methods to calculate nearby points of interest. This article presents an implementation methodology for proximity queries using PostgreSQL’s PostGIS extension, focusing on the ST_DWithin function and spatial ...
Pavan Kumar Papasani, Ravi Teja Papasani
doaj +2 more sources
Revista Eletrônica Teccen, 2015 Neste artigo é mostrado o desenvolvimento de um banco de dados geográfico para subsidiar a análise da distribuição espacial da incidência da Leshimaniose Visceral no município de Cametá, no estado do Pará.
Cláudia Souza +5 more
doaj
GeoSpark SQL: An Effective Framework Enabling Spatial Queries on Spark
ISPRS International Journal of Geo-Information, 2017 In the era of big data, Internet-based geospatial information services such as various LBS apps are deployed everywhere, followed by an increasing number of queries against the massive spatial data.
Zhou Huang +3 more
doaj +1 more source
Applied SciencesThe dynamic development of agent systems and large language models opens up new possibilities for automating spatial and investment analyses. The study evaluated a reactive AI agent with an NLP interface, integrating Apache Spark for large-scale data ...
Anna Kochanek +3 more
doaj +1 more source
Implementation and Evaluation of the Shortest-Path Algorithm for GIS Network Routing
Engineering ProceedingsThis work examines the implementation and evaluation of shortest-path algorithm in a Geographic Information System environment integrating QGIS with a PostgreSQL/PostGIS spatial database.
Ventsislav Stanchev +3 more
doaj +1 more source
PostGIS-Based Heterogeneous Sensor Database Framework for the Sensor Observation Service
Geoinformatics FCE CTU, 2012 Environmental monitoring and management systems in most cases deal with models and spatial analytics that involve the integration of in-situ and remote sensor observations.
Ikechukwu Maduako
doaj +1 more source