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Instituto Geográfico Nacional (Spain)
The ''Instituto Geográfico Nacional'' (''IGN''), or National Geographic Institute is a Spanish government agency, dependent on the Spanish Ministry of Public Works. It is the national mapping agency for Spain, together with the Centro Nacional de Información Geográfica (CNIG). Since 2015, most of its products (including ''MTN50'' and ''MTN25'' topographic maps, and ''PNOA'' aerial photographies) are freely available online, and licensed under a CC-BY-4.0-like license, as ''FOM/2807/2015'' decree requires its products must be released under a free license. Roles The IGN is responsible for: # Astronomic observations and research # Observation and maintenance of the national geodetic networks # Making and updating the cartography for the country (including official National Topographic Maps, called MTN50 (1:50,000 scale) and MTN25 (1:25,000 scale)) # Making and maintaining the IDEE or Infraestructura de Datos Espaciales de España, the Spanish Spatial Data Infrastructure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free License
A free license or open license is a license which allows others to reuse another creator’s work as they wish. Without a special license, these uses are normally prohibited by copyright, patent or commercial license. Most free licenses are worldwide, royalty-free, non-exclusive, and perpetual (see copyright durations). Free licenses are often the basis of crowdsourcing and crowdfunding projects. The invention of the term "free license" and the focus on the rights of users were connected to the sharing traditions of the hacker culture of the 1970s public domain software ecosystem, the social and political free software movement (since 1980) and the open source movement (since the 1990s). These rights were codified by different groups and organizations for different domains in Free Software Definition, Open Source Definition, Debian Free Software Guidelines, Definition of Free Cultural Works and The Open Definition. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autonomous Communities Of Spain
eu, autonomia erkidegoa ca, comunitat autònoma gl, comunidade autónoma oc, comunautat autonòma an, comunidat autonoma ast, comunidá autónoma , alt_name = , map = , category = Autonomous administrative division , territory = , upper_unit = , start_date = 1979–1983 , legislation_begin = Spanish Constitution of 1978 , legislation_end = , end_date = , current_number = 17 autonomous communities 2 autonomous cities , number_date = , type = , status = , exofficio = , population_range = Autonomous communities:319,914 ( La Rioja) – 8,464,411 ( Andalusia)Autonomous cities:84,202 ( Ceuta) – 87,076 (Melilla) , area_range = Autonomous communities:4,992 km2 (Balearic Islands) – 94,223 km2 (Castile and León)Autonomous cities:12.3 km2 (Melilla) – 18.5 km2 ( Ceuta) , government = Autonomous government , subdivision = ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Government Of Spain
gl, Goberno de España eu, Espainiako Gobernua , image = , caption = Logo of the Government of Spain , headerstyle = background-color: #efefef , label1 = Role , data1 = Executive power , label2 = Established , data2 = , label3 = Country , data3 = Kingdom of Spain , label4 = Appointed by , data4 = Monarch , label5 = Main organ , data5 = Council of Ministers , label6 = Responsible to , data6 = Cortes Generales , label7 = Constitution instrument , data7 = Government Act of 1997 , header8 = Cabinet , label9 = Members , data9 = Sánchez Government , label10 = Prime Minister , data10 = Pedro Sánchez , label11 = Deputy Prime Minister , data11 = Nadia Calviño , label12 = Number of members , data12 = 23 , header14 = Administration , label15 = Workinglanguage , data15 = Spanish , label16 = Staff organization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madrid
Madrid ( , ) is the capital and most populous city of Spain. The city has almost 3.4 million inhabitants and a metropolitan area population of approximately 6.7 million. It is the second-largest city in the European Union (EU), and its monocentric metropolitan area is the third-largest in the EU.United Nations Department of Economic and Social AffairWorld Urbanization Prospects (2007 revision), (United Nations, 2008), Table A.12. Data for 2007. The municipality covers geographical area. Madrid lies on the River Manzanares in the central part of the Iberian Peninsula. Capital city of both Spain (almost without interruption since 1561) and the surrounding autonomous community of Madrid (since 1983), it is also the political, economic and cultural centre of the country. The city is situated on an elevated plain about from the closest seaside location. The climate of Madrid features hot summers and cool winters. The Madrid urban agglomeration has the second-la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Algete
Algete () is a town and municipality in central Spain. It lies in the comarca de Alcalá in the autonomous community of the Community of Madrid. It had a population of 19,345 in 2008. Algete is northeast of the capital. Sights include the church of Asunción de Nuestra Señora. History There are no records of the first settlements in Algete. There are remains of human settlements in the Iron Age found in the fertile plain of Jarama. Remains of Roman villas and Visigoth settlements have also been found. It is known that it was inhabited in Arabic times due to the existence of ''qanat'' or underground waterways. From this period may come its name, derived from Al-Satt, which means ''the bank'' (by the River Jarama). In 1081, Alfonso VI began the reconquest of the Jarama basin, expelling the Muslims and repopulating the area with Christians from the South. In the 16th century, Algete became a town. The church was rebuilt, possibly on top of a Romanesque church. In 1579, Pope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cartography
Cartography (; from grc, χάρτης , "papyrus, sheet of paper, map"; and , "write") is the study and practice of making and using maps. Combining science, aesthetics and technique, cartography builds on the premise that reality (or an imagined reality) can be modeled in ways that communicate spatial information effectively. The fundamental objectives of traditional cartography are to: * Set the map's agenda and select traits of the object to be mapped. This is the concern of map editing. Traits may be physical, such as roads or land masses, or may be abstract, such as toponyms or political boundaries. * Represent the terrain of the mapped object on flat media. This is the concern of map projections. * Eliminate characteristics of the mapped object that are not relevant to the map's purpose. This is the concern of generalization. * Reduce the complexity of the characteristics that will be mapped. This is also the concern of generalization. * Orchestrate the elements ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geodetic Network
A geodetic control network (also geodetic network, reference network, control point network, or control network) is a network, often of triangles, which are measured precisely by techniques of terrestrial surveying or by satellite geodesy. A geodetic control network consists of stable, identifiable points with published datum values derived from observations that tie the points together. Classically, a control is divided into horizontal (X-Y) and vertical (Z) controls (components of the control), however with the advent of satellite navigation systems, GPS in particular, this division is becoming obsolete. Many organizations contribute information to the geodetic control network. The higher-order (high precision, usually millimeter-to-decimeter on a scale of continents) control points are normally defined in both space and time using global or space techniques, and are used for "lower-order" points to be tied into. The lower-order control points are normally used for engine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Creative Commons License
A Creative Commons (CC) license is one of several public copyright licenses that enable the free distribution of an otherwise copyrighted "work".A "work" is any creative material made by a person. A painting, a graphic, a book, a song/lyrics to a song, or a photograph of almost anything are all examples of "works". A CC license is used when an author wants to give other people the right to share, use, and build upon a work that the author has created. CC provides an author flexibility (for example, they might choose to allow only non-commercial uses of a given work) and protects the people who use or redistribute an author's work from concerns of copyright infringement as long as they abide by the conditions that are specified in the license by which the author distributes the work. There are several types of Creative Commons licenses. Each license differs by several combinations that condition the terms of distribution. They were initially released on December 16, 2002, by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthophoto
An orthophoto, orthophotograph, orthoimage or orthoimagery is an aerial photograph or satellite imagery geometrically corrected ("orthorectified") such that the scale is uniform: the photo or image follows a given map projection. Unlike an uncorrected aerial photograph, an orthophoto can be used to measure true distances, because it is an accurate representation of the Earth's surface, having been adjusted for topographic relief, lens distortion, and camera tilt. Orthophotographs are commonly used in geographic information systems ( GIS) as a "map accurate" background image. An orthorectified image differs from "rubber sheeted" rectifications as the latter may accurately locate a number of points on each image but "stretch" the area between so scale may not be uniform across the image. A digital elevation model (DEM) is required to create an accurate orthophoto as distortions in the image due to the varying distance between the camera/sensor and different points on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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