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Postgis
PostGIS ( ) is an open source software program that adds support for geographic objects to the PostgreSQL object-relational database. PostGIS follows the Simple Features for SQL specification from the Open Geospatial Consortium (OGC). Technically PostGIS was implemented as a ''PostgreSQL external extension''. Features * Geometry types for Points, LineStrings, Polygons, MultiPoints, MultiLineStrings, MultiPolygons, GeometryCollections, 3D types TINS and polyhedral surfaces, including solids. * Spheroidal types under the geography datatype Points, LineStrings, Polygons, MultiPoints, MultiLineStrings, MultiPolygons and GeometryCollections. * raster type - supports various pixel types and more than 1000 bands per raster. Since PostGIS 3, is a separate PostgreSQL extension called postgis_raster. * SQL/MM Topology support - via PostgreSQL extension postgis_topology. * Spatial predicates for determining the interactions of geometries using the 3x3 DE-9IM (provided by the GEOS softwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DE-9IM
The Dimensionally Extended 9-Intersection Model (DE-9IM) is a topological model and a standard used to describe the spatial relations of two regions (two geometries in two-dimensions, R2), in geometry, point-set topology, geospatial topology, and fields related to computer spatial analysis. The spatial relations expressed by the model are invariant to rotation, translation and scaling transformations. The matrix provides an approach for classifying geometry relations. Roughly speaking, with a true/false matrix domain, there are 512 possible 2D topologic relations, that can be grouped into ''binary classification schemes''. The English language contains about 10 schemes (relations), such as "intersects", "touches" and "equals". When testing two geometries against a scheme, the result is a ''spatial predicate'' named by the scheme. The model was developed by Clementini and others based on the seminal works of Egenhofer and others. It has been used as a basis for standards o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GiST
In computing, GiST or Generalized Search Tree, is a data structure and API that can be used to build a variety of disk-based search trees. GiST is a generalization of the B+ tree, providing a concurrent and recoverable height-balanced search tree infrastructure without making any assumptions about the type of data being stored, or the queries being serviced. GiST can be used to easily implement a range of well-known indexes, including B+ trees, R-trees, hB-trees, RD-trees, and many others; it also allows for easy development of specialized indexes for new data types. It cannot be used directly to implement non-height-balanced trees such as quad trees or prefix trees (tries), though like prefix trees it does support compression, including lossy compression. GiST can be used for any data type that can be naturally ordered into a hierarchy of supersets. Not only is it extensible in terms of data type support and tree layout, it allows the extension writer to support any query pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linux
Linux ( or ) is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged as a Linux distribution, which includes the kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name "GNU/Linux" to emphasize the importance of GNU software, causing some controversy. Popular Linux distributions include Debian, Fedora Linux, and Ubuntu, the latter of which itself consists of many different distributions and modifications, including Lubuntu and Xubuntu. Commercial distributions include Red Hat Enterprise Linux and SUSE Linux Enterprise. Desktop Linux distributions include a windowing system such as X11 or Wayland, and a desktop environment such as GNOME or KDE Plasma. Distributions intended for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CockroachDB
CockroachDB is a commercial distributed SQL database management system, developed by Cockroach Labs. History Cockroach Labs was founded in 2015 by ex-Google employees Spencer Kimball, Peter Mattis, and Ben Darnell. Cockroach Labs founders Kimball and Mattis were key members of the Google File System team while Darnell was a key member of the Google Reader team. While at Google, all three had previously used Google-owned DBMS’s Bigtable and its successor Spanner. After leaving Google, they wanted to design and build something similar on their own. Spencer Kimball wrote the first iteration of the design in January 2014, and began the open-source project on GitHub in February 2014, allowing outside access and contributions. Development on GitHub attracted substantial contributions, which made the project earn the ''Open Source Rookie of the Year'' award by Black Duck Software. The co-founders actively supported the project with conferences, networking, meet-ups, and fund- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maptitude
Maptitude is a mapping software program created by Caliper Corporation that allows users to view, edit and integrate maps. The software and technology are designed to facilitate the geographical visualization and analysis of either included data or custom external data. Maptitude is intended for business users but competes at all levels of the GIS market in many different sectors. It encapsulates the core GIS functionality of the Caliper mapping software suite of products, and integrates with Microsoft Office, data mapping from various sources including Microsoft Excel, and includes a proprietary BASIC-like programming language (Caliper Script) within a development interface (GISDK) that allows automation of the Maptitude environment. Maptitude geocodes addresses and maintains the geocode precision (the method used to locate the address) in a column in the attribute table. Maptitude provides route planning tools for route optimization that provide route directions for optima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BSD Licenses
BSD licenses are a family of permissive free software licenses, imposing minimal restrictions on the use and distribution of covered software. This is in contrast to copyleft licenses, which have share-alike requirements. The original BSD license was used for its namesake, the Berkeley Software Distribution (BSD), a Unix-like operating system. The original version has since been revised, and its descendants are referred to as modified BSD licenses. BSD is both a license and a class of license (generally referred to as BSD-like). The modified BSD license (in wide use today) is very similar to the license originally used for the BSD version of Unix. The BSD license is a simple license that merely requires that all code retain the BSD license notice if redistributed in source code format, or reproduce the notice if redistributed in binary format. The BSD license (unlike some other licenses e.g. GPL) does not require that source code be distributed at all. Terms In addition ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MapServer
MapServer is an open-source development environment for building spatially enabled internet applications, built in the C language, and is widely known as one of the fastest Web mapping engines available. It can run as a CGI program or via MapScript which supports several programming languages (using SWIG). MapServer can access hundreds of data formats, any raster or vector format supported by GDAL, and reprojections on-the-fly are handled by PROJ. MapServer was originally developed by Steve Lime, then working at the University of Minnesota — so, it was previously referred to as "''UMN MapServer''", to distinguish it from commercial "map servers"; today it is commonly referred to as just "MapServer", and is maintained by the MapServer Project Steering Committee (PSC). MapServer was originally developed with support from NASA, which needed a way to make its satellite imagery available to the public. Open Source Geospatial Foundation In November 2005, Autodesk, the MapSe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mapnik
Mapnik is an open-source mapping toolkit for desktop and server based map rendering, written in C++. Artem Pavlenko, the original developer of Mapnik, set out with the explicit goal of creating beautiful maps by employing the sub-pixel anti-aliasing of the Anti-Grain Geometry (AGG) library. Mapnik now also has a Cairo rendering backend. For handling common software tasks such as memory management, file system access, regular expressions, and XML parsing, Mapnik utilizes the Boost C++ libraries. An XML file can be used to define a collection of mapping objects that determine the appearance of a map, or objects can be constructed programmatically in C++, Python, and Node.js. Data format A number of data formats are supported in Mapnik using a plugin framework. Current plugins exist that utilize OGR and GDAL to read a range of vector and raster datasets. Mapnik also has custom Shapefile, PostGIS and GeoTIFF readers. There is also an osm2pgsql utility, that converts OpenStreetMap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MapInfo Professional
MapInfo Pro is a desktop geographic information system (GIS) software product produced by Precisely (formerly: Pitney Bowes Software and MapInfo Corporation) and used for mapping and location analysis. MapInfo Pro allows users to visualize, analyze, edit, interpret, understand and output data to reveal relationships, patterns, and trends. MapInfo Pro allows users to explore spatial data within a dataset, symbolize features, and create maps. History Version 4 of the product, released in 1995, saw the product renamed to "MapInfo Professional". Version 9.5 was released in June 2008. Version 9.5.1 was released in December 2008. The primary enhancements in these releases included the use of a new graphics engine which allows for translucency and anti-aliasing when displaying maps. A set of CAD like editing tools were also added in this release. Version 10 was released in June 2009. The primary enhancements included a more intuitive user interface, including a rewritten Lay ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manifold System
Manifold System is a geographic information system (GIS) software package developed by Manifold Software Limited that runs on Microsoft Windows. Manifold System handles both vector and raster data, includes spatial SQL, a built-in Internet Map Server (IMS), and other general GIS features. History The development team for Manifold was created in 1993 to optimize mathematics libraries for a massively-parallel supercomputer created in a joint venture between Intel Corporation and the US Department of Defense. The team subsequently embarked on a plan to create and sell mathematics libraries, including the General Graph Facilities library (GGF) and the Computational Geometry Library (CGL), under the name of the Center for Digital Algorithms. A series of "workbench" products were created to help teach customers the operation of algorithms in the libraries using visual means. Road networks and geometric data in geographic contexts were used to provide visual familiarity and interes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kosmo
Kosmo is a desktop geographic information system (GIS) with advanced functions. It is the first of a series of developments that are being made available to the community. Kosmo was implemented using the Java programming language and is being developed from the JUMP GIS platform and a series of free code libraries, all of which are well acknowledged and widely used in different free software projects (for example, Geotools and JTS). It is available for Windows and Linux operating systems. It is a tool for visualizing and processing spatial data, characterized by its friendly user interface and access to multiple data formats, both vectorial (in a file, such as Shapefile, GML, KML, DWG and DXF, or a database, such as PostgreSQL, MySQL, or Oracle) and raster (TIFF, ECW, MrSID, or other georeferenced image files, such as BMP, GIF, JPEG, or PNG). It can also edit and offer a variety of utilities to the GIS user, like support for ww.sextantegis.com/ Sextantelibraries for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GvSIG
gvSIG, geographic information system (GIS), is a desktop application designed for capturing, storing, handling, analyzing and deploying any kind of referenced geographic information in order to solve complex management and planning problems. gvSIG is known for having a user-friendly interface, being able to access the most common formats, both vector and raster ones. It features a wide range of tools for working with geographic-like information (query tools, layout creation, geoprocessing, networks, etc.). * Integrating in the same view both local (files, databases) and remote data through OGC standards. * Including a plugin system which allows to easily extend the application or to develop tailor-made solutions. * Being open source software under the GNU General Public License (GPL), which allows its free use, distribution, study and improvement. * Being available in several languages: Spanish, English UK, English USA, German, French, Italian, Portuguese, Portuguese-Brazilian, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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