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SaTScan
SaTScan is a software tool that employs scan statistics for the spatial and temporal analysis of clusters of events. The software is trademarked by Martin Kulldorff, and was designed originally for public health and epidemiology to identify clusters of cases in both space (geographical location) and time and to perform statistical analysis to determine if these clusters are significantly different from what would be expected by chance The software provides a user-friendly interface and a range of statistical methods, making it accessible to researchers and practitioners. While not a full Geographic Information System, the outputs from SaTScan can be integrated with software such as ArcGIS or QGIS to visualize and analyze spatial data, and to map the distribution of various phenomena. Analysis SaTScan employs scan statistics to identify Cluster analysis, clusters of space and time phenomena. Scan statistics use regular shapes (usually circles) of varying sizes to evaluate a study a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scan Statistics
In statistics, a scan statistic or window statistic is a problem relating to the clustering of randomly positioned points. An example of a typical problem is the maximum size of a cluster of points on a line or the longest series of successes recorded by a moving window of fixed length. Joseph Naus first published on the problem in the 1960s, and has been called the "father of the scan statistic" in honour of his early contributions. The results can be applied in epidemiology, public health and astronomy to find unusual clusters of events. It was extended by Martin Kulldorff to multidimensional settings and varying window sizes in a 1997 paper, which is () the most cited article in its journal, ''Communications in Statistics, Communications in Statistics – Theory and Methods''. This work lead to the creation of the software SaTScan, a program trademarked by Martin Kulldorff that applies his methods to data. Recent results have shown that using scale-dependent critical values for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin Kulldorff
Martin Kulldorff (born 1962) is a Swedish biostatistician. He was a professor of medicine at Harvard Medical School from 2003 until his dismissal in 2024. He is a member of the US Food and Drug Administration's Drug Safety and Risk Management Advisory Committee and a former member of the Vaccine Safety Subgroup of the Advisory Committee on Immunization Practices at the Centers for Disease Control and Prevention. In 2020, Kulldorff was a co-author of the Great Barrington Declaration, which advocated lifting COVID-19 restrictions on lower-risk groups to develop herd immunity through infection before vaccines became available, while promoting the fringe notion that vulnerable people could be simultaneously protected from the virus. The declaration was widely rejected, and was criticized as being unethical and infeasible by Tedros Adhanom Ghebreyesus, the director-general of the World Health Organization. During the pandemic, Kulldorff opposed disease control measures such as v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of GIS Software
A GIS software program is a computer program to support the use of a geographic information system, providing the ability to create, store, manage, query, analyze, and visualize geographic data, that is, data representing phenomena for which location is important. The GIS software industry encompasses a broad range of commercial and open-source products that provide some or all of these capabilities within various information technology architectures."GIS Software - A description in 1000 words" S. Steiniger and R. Weibel History The earliest geographic information systems, such as the[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of GIS Data Sources
This is a list of GIS data sources (including some geoportals) that provide information sets that can be used in geographic information systems (GIS) and spatial database A spatial database is a general-purpose database (usually a relational database) that has been enhanced to include spatial data that represents objects defined in a geometric space, along with tools for querying and analyzing such data. Most ...s for purposes of geospatial analysis and cartographic mapping. This list categorizes the sources of interest. Global Polar region Europe Europe by country Cyprus Czech Republic Greece Lithuania Czech Republic Sweden Brazil Canada Canada Regional India United States United States Regional Alabama Alaska Connecticut Florida Kentucky Louisiana Maryland Pennsylvania South Carolina Washington State South Africa See also * Geoportal * National lidar dataset, for a li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet GIS
Internet GIS is broad set of technologies and applications that employ the Internet to access, analyze, visualize, and distribute spatial data via geographic information systems (GIS). Internet GIS is an outgrowth of traditional GIS, and represents a shift from conducting GIS on an individual computer to working with remotely distributed data and functions. Two major issues in GIS are accessing and distributing spatial data and GIS outputs. Internet GIS helps to solve that problem by allowing users to access vast databases impossible to store on a single desktop computer, and by allowing rapid dissemination of both maps and raw data to others. These methods include both file sharing and email. This has enabled the general public to participate in map creation and make use of GIS technology. Internet GIS is a subset of Distributed GIS, but specifically uses the internet rather than generic computer networks. Internet GIS applications are often, but not exclusively, conducted throu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Integrated Geo Systems
Integrated Geo Systems (IGS) is a computational architecture system developed for managing geoscientific data through systems and data integration. Geosciences often involve large volumes of diverse data which have to be processed by computer and graphics intensive applications. The processes involved in processing these large datasets are often so complex that no single applications software can perform all the required tasks. Specialized applications have emerged for specific tasks. To get the required results, it is necessary that all applications software involved in various stages of data processing, analysis and interpretation effectively communicate with each other by sharing data. IGS provides a framework for maintaining an electronic workflow between various geoscience software applications through data connectivity. The main components of IGS are: * Geographic information systems A geographic information system (GIS) consists of integrated computer hardware and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GIS Day
GIS Day is an annual event celebrating geographic information systems (GIS) based technologies on the third Wednesday of November. The event first took place in 1999. It was initiated by spatial analytics software provider Esri. Esri president and co-founder Jack Dangermond credits Ralph Nader with being the person who inspired the creation of GIS Day. He considered the event a good initiative for people to learn about geography and the many uses of GIS. He wanted GIS Day to be a grassroots effort and open to everyone to participate. Today, the event provides an international forum for users of GIS technology from across the GIS industry to demonstrate real-world applications that are making a difference in society. Originally the Canada Geographic Information System developed in the 1960s by Roger Tomlinson, it is now used worldwide. Original sponsors of GIS Day included the following organizations: * National Geographic Society * American Association of Geographers (AAG), form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GISCorps
GISCorps, founded in 2003, is a program initiated by the Urban and Regional Information Systems Association (URISA) that offers volunteer GIS services to under-served developing communities worldwide. This volunteer based organization is headed by a team of professionals trained in urban and regional development. GISCorps has approximately 10,000 volunteers located in five continents and prepared to work on both domestic and international projects. Their services are used for supplementing humanitarian relief, enhancing environmental analysis and fostering economic as well as community development. They promote the use of information technology for more accurate and efficient means of illustrating and improving the civic infrastructure of a region. Projects GISCorps has assisted in the following projects: * Filtering Data for Hurricane Matthew in 2016 * Data Collection in Burundi * Mission with World Food Programme in North Korea during 2016 * Geocoding Locations in NigerCOV ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distributed GIS
Distributed GIS refers to GI Systems that do not have all of the system components in the same physical location. This could be the processing, the database, the rendering or the user interface. It represents a special case of distributed computing, with examples of distributed systems including Internet GIS, Web GIS, and Mobile GIS. Distribution of resources provides corporate and enterprise-based models for GIS (involving multiple databases, different computers undertaking spatial analysis and a diverse ecosystem of often spatially-enabled client devices). Distributed GIS permits a shared services model, including data fusion (or mashups) based on Open Geospatial Consortium (OGC) web services. Distributed GIS technology enables modern online mapping systems (such as Google Maps and Bing Maps), Location-based services (LBS), web-based GIS (such as ArcGIS Online) and numerous map-enabled applications. Other applications include transportation, logistics, utilities, farm / agric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Counter-mapping
Counter-mapping is creating maps that challenge "dominant power structures, to further seemingly progressive goals". Counter-mapping is used in multiple disciplines to reclaim colonized territory. Counter-maps are prolific in indigenous cultures, "counter-mapping may reify, reinforce, and extend settler boundaries even as it seeks to challenge dominant mapping practices; and still, counter-mapping may simultaneously create conditions of possibility for decolonial ways of representing space and place." The term came into use in the United States when Nancy Lee Peluso, Nancy Peluso used it in 1995 to describe the commissioning of maps by forest users in Kalimantan, Indonesia, to contest government maps of forest areas that undermined indigenous peoples, indigenous interests. The resultant counter-hegemonic maps strengthen forest users' resource claims. There are numerous expressions closely related to counter-mapping: ethnocartography, alternative cartography, mapping-back, counter-h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Concepts And Techniques In Modern Geography
''Concepts and Techniques in Modern Geography'' (CATMOG), is a series of 59 short publications, each focused on an individual method or theory in geography. Background and impact ''Concepts and Techniques in Modern Geography'' were produced by the Study Group in Quantitative Methods of the Institute of British Geographers. Each CATMOG publication was written on an individual topic in geography rather than a series of broad topics like traditional textbooks and ranged between 40 and 70 pages.c This à la carte approach allowed only purchasing publications on topics of interest, keeping each CATMOG relatively cheap and accessible, lowering student costs with early copies sold for around $2.00. This also offered instructors more flexibility in designing courses. The first of these publications was published in 1975, and the last in 1996. Each was written by someone working professionally with its topic, which created some issues in consistency between publications in terms of expec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Comparison Of GIS Software
This is a comparison of notable GIS software. To be included on this list, the software must have a linked existing article. The selection of GIS software is a non-trivial task typically undertaken at project commencement. The use of appropriate selection criteria and methodology can be critical to a project's success, with considerations including outlay costs, ease of use, data and system harmonization and maintenance, incorporation of advances in technology, and downstream system integration. License, source, & operating system support Pure server Map servers Map caches Pure web client Libraries See also * Open Source Geospatial Foundation (OSGeo) * Geographic information system software * GIS Live DVD References {{DEFAULTSORT:Comparison Of Geographic Information Systems Software GIS software GIS A geographic information system (GIS) consists of integrated computer hardware and software that store, manage, analyze, edit, output, and visualize geographic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
