Untangling origin-destination flows in geographic information systems

2017 ◽  
Vol 18 (1) ◽  
pp. 153-172 ◽  
Author(s):  
Anita Graser ◽  
Johanna Schmidt ◽  
Florian Roth ◽  
Norbert Brändle
Keyword(s):  
Information System ◽  
Information Systems ◽  
Geographic Information System ◽  
Geographic Information Systems ◽  
Spatial Data ◽  
Geographic Information ◽  
Data Sets ◽  
Flow Maps ◽  
Local Strength ◽  
Edge Bundling

Origin–destination flow maps are a popular option to visualize connections between different spatial locations, where specific routes between the origin and destination are unknown or irrelevant. Visualizing origin–destination flows is challenging mainly due to visual clutter which appears quickly as data sets grow. Clutter reduction techniques are intensively explored in the information visualization and cartography domains. However, current automatic techniques for origin–destination flow visualization, such as edge bundling, are not available in geographic information systems which are widely used to visualize spatial data, such as origin–destination flows. In this article, we explore the applicability of edge bundling to spatial data sets and necessary adaptations under the constraints inherent to platform-independent geographic information system scripting environments. We propose (1) a new clustering technique for origin–destination flows that provides within-cluster consistency to speed up computations, (2) an edge bundling approach based on force-directed edge bundling employing matrix computations, (3) a new technique to determine the local strength of a bundle leveraging spatial indexes, and (4) a geographic information system–based technique to spatially offset bundles describing different flow directions. Finally, we evaluate our method by applying it to origin–destination flow data sets with a wide variety of different data characteristics.

scholarly journals Pemodelan UML Sistem Informasi Geografis Pasar Tradisional Kota Pekanbaru

2016 ◽  
Vol 7 (2) ◽  
pp. 89-99
Author(s):  
Sutejo Sutejo
Keyword(s):  
Information System ◽  
Information Systems ◽  
Geographic Information System ◽  
Geographic Information Systems ◽  
Unified Modeling Language ◽  
Geographic Information ◽  
Web Based ◽  
Traditional Markets ◽  
Traditional Market ◽  
Future Events

Abstrak- Dunia sistem informasi terdapat banyak model sistem informasi, kaitan pasar dengan sistem informasi geografis adalah untuk memberikan berbagai macam informasi, terutama letak geografis pasar tersebut. Pentingnya informasi ini memberi banyak inspirasi terhadap pembuat model untuk merancang sistem-sistem yang mendekati dunia nyata. Model sistem informasi juga diharapkan dapat digunakan sebagai alat prediksi kejadian di masa depan dengan mendasarkan pada data yang ada pada masa lalu dan masa sekarang. Sistem Informasi Geografis (SIG) ini di rancang untuk mengumpulkan data, meyimpan dan mengubah data, serta menganalisis objek beserta data geografis yang bersifat penting untuk di analisis. GIS yang disajikan dengan berbasis web pada perancangan ini juga dapat digunakan sebagai alat pemberian informasi kepada masyarakat luas. Hasil penelitian dengan pemodelan UML (Unified Modelling Language) sangat membantu dalam proses perancangan sebuah sistem informasi geografis pasar tradisional serta aplikasi sistem informasi geografis pasar tradisional berbasis web ini dapat digunakan sebagai sarana informasi pasar, khususnya bagi para calon pedagang yang ingin berdagang di salah satu pasar tradisional yang ada di Kota Pekanbaru. Kata Kunci : Sistem Informasi Geografis, Web, Pasar Tradisional, Pemodelan, UML. Abstract- The world of information systems provides many models of information systems, the link of market with a geographic information system is to provide various kinds of information, specially the geographical markets. The importance of this information gives a lot of inspiration for the model makers to design systems that approximates the real world. Model of information system is also expected to be used as predictors of future events by basing on the existing data on past and present. Geographic Information Systems (GIS) is designed to collect data, store and modify data, and analyzing object along with geographic data which is important for analysis. GIS is presented with a web based on this design can also be used as a tool to provide information to the general public. The results of research by modeling UML (Unified Modeling Language) is very helpful in the process of designing a geographic information system of traditional markets as well as the application of geographic information system web-based traditional market can be used as a means of market information, especially for potential traders who want to trade in one of the traditional markets in the city of Pekanbaru. Keywords: Geographic Information Systems, Web, Traditional Market, Modeling, UML.

Geographic Information Systems

2020 ◽  
pp. 122-138
Keyword(s):  
Information System ◽  
Information Systems ◽  
Geographic Information System ◽  
Geographic Information Systems ◽  
Computer System ◽  
Management System ◽  
Database Management ◽  
Geographic Information ◽  
Database Management System

The chapter presents the geographic information systems. A geographic information system (GIS) is a computer system that allows various sources to gather and organize, manage, analyze and combine, develop, and present geographically located information contributing in particular to the management from space. A geographic information system is also a database management system for entering, storing, retrieving, querying, analyzing, and displaying localized data. It is a set of data located in space, structured so that it can conveniently extract syntheses useful to the decision.

THE APPLYING OF GIS INFORMATION TECHNOLOGIES IN THE SPHERE OF THE REMOTE SENSING OF THE EARTH TO SOLVE MILITARY PROBLEMS

2018 ◽  
pp. 18-22
Author(s):  
N. Lytvynenko
Keyword(s):  
Remote Sensing ◽  
Information System ◽  
Information Systems ◽  
Geographic Information System ◽  
Geographic Information Systems ◽  
Information Technologies ◽  
Rapid Development ◽  
Geographic Information ◽  
The Earth

The rapid development of geographic information systems and means of remote sensing, observed in recent decades, requires the mutual integration of these areas. This article focuses on the integration of geographic information systems and technologies in the field of remote sensing to solve military problems. Keywords: remote sensing, geographic information system.

Developing geographic information systems platforms for multijurisdictional transportation analyses: framework and techniques for spatial data sharing

2003 ◽  
Vol 30 (5) ◽  
pp. 807-818 ◽  
Author(s):  
Kai Han ◽  
Scott Minty ◽  
Alan Clayton
Keyword(s):  
Information Systems ◽  
Geographic Information Systems ◽  
Data Sharing ◽  
Spatial Data ◽  
Rural Areas ◽  
Geographic Information ◽  
Data Sets ◽  
Data Interoperability ◽  
Urban And Rural Areas ◽  
Integration Data

Geographic information systems (GISs) have been presented as a powerful analysing tool for civil engineers to help their decision-making processes. Building GIS platforms for transportation analysis involving multiple jurisdictions has been challenging, however, because of the complexity and difficulty associated with conducting data sharing and ensuring spatial data interoperability among GISs for transportation (GIS-T) data sets. In the context of western Canadian urban and rural areas, this paper investigates the issues related to GIS-T data sharing, establishes a conceptual framework, develops techniques supporting the framework by solving recurring data-sharing problems, and constructs a number of GIS-T platforms facilitating comprehensive multijurisdictional transportation analyses. In addition, based on the knowledge gained through solving real-world problems, the authors propose an open GIS-T platform consisting of a series of customized base maps, each being tailored to suit the needs of individual application and, as a whole, linked together by interoperability to better support transportation applications.Key words: transportation engineering analysis, GIS, GIS-T, spatial data, interoperability, integration, data sharing.

Geographic Information System Applications in the Public Sector

2011 ◽  
pp. 293-311
Author(s):  
Douglas A. Carr ◽  
T. R. Carr
Keyword(s):  
Decision Making ◽  
Information System ◽  
Information Systems ◽  
Geographic Information System ◽  
Geographic Information Systems ◽  
Geographic Information ◽  
Management Decision ◽  
Public Managers ◽  
Gis Applications ◽  
Management Decision Making

Geographic information systems emerged in the 1970s and have become a significant decision-making tool as their capabilities have been enhanced. This chapter discusses various GIS applications and highlights issues that public managers should consider when evaluating implementation of a geographic information system. GIS applications provide benefits at the planning level by producing maps efficiently, and at the management decision-making level through an ability to geographically display important information for policy-level decisions. While GIS analysis can be a powerful tool, there are a number of issues that pubic managers should consider in order to achieve effective implementation and use of geographic information systems.

Geographic Information Systems: A Critical Look at the Commercialization of Public Information

2011 ◽  
Vol 4 (3) ◽  
pp. 88-105 ◽  
Author(s):  
Safiya Umoja Noble
Keyword(s):  
Information Systems ◽  
Geographic Information Systems ◽  
Spatial Data ◽  
Public Information ◽  
Geographic Information ◽  
The Internet ◽  
Data Sets ◽  
Software Projects ◽  
For Profit ◽  
Huge Data

This paper is a political economic critique and exploration of the ways that private-sector companies in the Geographic Information Systems (GIS) industry have emerged and consolidated themselves. This includes a discussion about buying, analyzing and selling spatial data mined from the Internet and other public resources, and how this is packaged and sold to other corporations for profit. I detail GIS research and development projects and the activities that are fueling growth. One of the fastest growing sectors of the GIS business is data mining and information processing, where companies are able to capitalize on the flow of information through proprietary systems or public networks like the Internet, and as such, are accumulating great wealth. GIS software projects are often the outgrowth of direct political and economic policy and funding, and industry giants are afforded greater access to purchasing huge data sets and labor to analyze and re-sell it. Public adoption and usage of GIS tools via the Internet is creating competitive tensions within the GIS industry and producing complex new partnerships. What is most critical to explore at this moment are the details of the industry, who it serves, and in whose interest. An understanding of the GIS terrain will better equip the public in making informed decisions about how state policies and consumer practices are contributing to, or disrupting, these activities.

scholarly journals Design Of Geographic Information Systems Monitoring Waqf At The Cikupa Sub-District Religious Affairs Office

2019 ◽  
Vol 3 (2) ◽  
pp. 131-141
Author(s):  
Harfizar Harfizar ◽  
Mulyati Mulyati ◽  
Mohamad Ali Fikri
Keyword(s):  
Information Technology ◽  
Information System ◽  
Information Systems ◽  
Geographic Information System ◽  
Geographic Information Systems ◽  
System Analysis ◽  
Unified Modeling Language ◽  
Geographic Information ◽  
Geographical Information ◽  
Good Ability

Geographic Information System Technology (GIS) / Geographic Information System (GIS) is a technological information system regarding geography that is very developed up to the present. Geographic Information Systems have a very good ability in visualizing spatial data and its attributes, modifying shapes, colors, sizes, and symbols. GIS can be used by various fields of science, work, and events. Along with the advancement of information technology in the modern era, government services to the public must adapt to the demands of the times. Creativity and innovation as a form of service to the community are absolute and very necessary and one of them is by providing information technology-based services. The Office of Religious Affairs is an office that carries out part of the duties of the Indonesian Ministry of Religion office in the regencies and municipalities in the field of Islamic religious affairs within the sub-district. The purpose of this research is to improve the management of waqf assets by displaying the geographical locations of waqf land assets so that it is easier to monitor waqf assets so that their utilization can be maximized through the geographical information system at the Cikupa District Religious Affairs Office. Endowments are assets of the people who must be saved, managed well, and developed for useful purposes. The system analysis method used is PIECES which consists of Performance, Information, Economy, Control, Efficiency and Service. Unified modeling Language (UML) as a tool to analyze system rocedures that are running. With a geographic information system monitoring waqf land assets can display waqf assets contained in Cikupa District by displaying the location of waqf land through digital maps contained in geographic information systems. Keywords: Systems, Monitoring, Endowments, Geographical.

scholarly journals INVESTIGATION OF ALTERNATIVE TOURISM TYPES AND SIGHTS VIA GEOGRAPHIC INFORMATION SYSTEMS: THE EXAPLE OF SAFRANBOLU

2017 ◽  
Vol IV-4/W4 ◽  
pp. 97-100 ◽  
Author(s):  
F. Aydın ◽  
O. Çepni ◽  
T. Turgut
Keyword(s):  
Information System ◽  
Information Systems ◽  
Geographic Information System ◽  
Geographic Information Systems ◽  
Geographic Information ◽  
Mountain Biking ◽  
Alternative Tourism ◽  
Gis Tools ◽  
Cultural Properties

In this study, alternative tourism types and sights belonging to Safranbolu were identified through Geographic Information System (GIS) tools. In this manner, most favorable tourism activities, which are specific to field, and evaluation factors of these activities were determined. “Suitability classification values” of these factors were charted by receiving opinions from experts. Natural and cultural properties of study area were determined in the light of evaluation factors and a database was set via GIS. This database was examined according to evaluation factors of the activities and the most suitable and conditional suitable areas were determined. In this study, it is aimed to carry out the suitable place analysis for alternative tourism types of Safranbolu, which is a tourism town, such as riding, mountain biking, camping, trekking. 486&amp;thinsp;km<sup>2</sup> area for riding, 319&amp;thinsp;m<sup>2</sup> for trekking, 209&amp;thinsp;km<sup>2</sup> for mountain biking and 148 km² for camping were figured out as suitable. These results reveal that tourism activities should be more professionally organized in order to apply alternative tourism types such as riding, mountain biking, camping, trekking. In addition, organizations such as festivals and fairs should be arranged in order to introduce products special to Safranbolu.

Techniques for Building Multijurisdictional Geographic Information System Platforms for Transportation Analysis

2002 ◽  
Vol 1804 (1) ◽  
pp. 187-195
Author(s):  
Kai Han ◽  
Jeannette Montufar ◽  
Scott Minty ◽  
Alan Clayton
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Data Sharing ◽  
Spatial Data ◽  
Geographic Information ◽  
Data Sources ◽  
Data Sets ◽  
Data Interoperability ◽  
Gis Data ◽  
Transportation Applications

Transportation analysis involving multiple jurisdictions requires data sharing and spatial data interoperability among geographic information system (GIS) data sets. Data sharing and spatial data interoperability issues related to multijurisdictional transportation analysis are discussed. Specific techniques based on practical data-sharing, problem-solving experience are developed. To further enhance the data-sharing process, a conceptual framework is established to guide technique implementations. Regional GIS transportation (GIS-T) platforms integrated from various data sources by applying the framework and the associated techniques are also presented. To better support different transportation applications, an open GIS-T platform is proposed, consisting of a series of customized base maps, each tailored to suit individual applications and, as a whole, linked together by inherently established interoperability.

Geographic Information Systems as Decision Tools

2005 ◽  
pp. 1274-1277 ◽  
Author(s):  
Martin D. Crossland
Keyword(s):  
Information Systems ◽  
Geographic Information Systems ◽  
Spatial Data ◽  
Information Science ◽  
Large Data ◽  
Geographic Information Science ◽  
Geographic Information ◽  
Data Sets ◽  
Decision Tools ◽  
University Consortium

Geographic information systems (GISs) as a technology have been studied and reported extensively and, not unexpectedly, in the field of geography. The various ways of capturing spatial data, arranging attribute data into appropriate database structures, and making the resulting large data sets efficient to store and query have been extensively researched and reported (Densham, 1991). However, the geographic research community has only recently noted the need to study how GISs are used as decision tools, especially with regard to how such decision making might be related to a decision maker’s cognitive style (Mennecke, Crossland, et al., 2000). As an example, the University Consortium for Geographic Information Science called for research examining how geographic knowledge is acquired through different media and by users with different levels of experience and training (University Consortium for Geographic Information Science, 1996).

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