Cartography is the study and practice of making and using maps. Combining science, aesthetics and technique, cartography builds on the premise that reality can be modeled in ways that communicate spatial information effectively.
A map is a symbolic depiction emphasizing relationships between elements of some space, such as objects, regions, or themes. Many maps are static, fixed to paper or some other durable medium, while others are dynamic or interactive. Although most commonly used to depict geography, maps may represent any space, real or fictional, without regard to context or scale, such as in brain mapping, DNA mapping, or computer network topology mapping. The space being mapped may be two dimensional, such as the surface of the Earth, three dimensional, such as the interior of the Earth, or even more abstract spaces of any dimension, such as arise in modeling phenomena having many independent variables.
In modern mapping, a topographic map or topographic sheet is a type of map characterized by large-scale detail and quantitative representation of relief features, usually using contour lines, but historically using a variety of methods. Traditional definitions require a topographic map to show both natural and artificial features. A topographic survey is typically based upon a systematic observation and published as a map series, made up of two or more map sheets that combine to form the whole map. A topographic map series uses a common specification that includes the range of cartographic symbols employed, as well as a standard geodetic framework that defines the map projection, coordinate system, ellipsoid and geodetic datum. Official topographic maps also adopt a national grid referencing system.
Topography is the study of the forms and features of land surfaces. The topography of an area may refer to the land forms and features themselves, or a description or depiction in maps.
The Survey of India is India's central engineering agency in charge of mapping and surveying. Set up in 1767 to help consolidate the territories of the British East India Company, it is one of the oldest Engineering Departments of the Government of India. Its members are from Survey of India Service cadre of Civil Services of India. It is headed by the Surveyor General of India. At present, the Surveyor General is Hitesh Kumar S. Makwana.
Chorography is the art of describing or mapping a region or district, and by extension such a description or map. This term derives from the writings of the ancient geographer Pomponius Mela and Ptolemy, where it meant the geographical description of regions. However, its resonances of meaning have varied at different times. Richard Helgerson states that "chorography defines itself by opposition to chronicle. It is the genre devoted to place, and chronicle is the genre devoted to time". Darrell Rohl prefers a broad definition of "the representation of space or place".
A thematic map is a type of map that portrays the geographic pattern of a particular subject matter (theme) in a geographic area. This usually involves the use of map symbols to visualize selected properties of geographic features that are not naturally visible, such as temperature, language, or population. In this, they contrast with general reference maps, which focus on the location of a diverse set of physical features, such as rivers, roads, and buildings. Alternative names have been suggested for this class, such as special-subject or special-purpose maps, statistical maps, or distribution maps, but these have generally fallen out of common usage. Thematic mapping is closely allied with the field of Geovisualization.
The history of cartography refers to the development and consequences of cartography, or mapmaking technology, throughout human history. Maps have been one of the most important human inventions for millennia, allowing humans to explain and navigate their way through the world.
Pictorial maps depict a given territory with a more artistic rather than technical style. It is a type of map in contrast to road map, atlas, or topographic map. The cartography can be a sophisticated 3-D perspective landscape or a simple map graphic enlivened with illustrations of buildings, people and animals. They can feature all sorts of varied topics like historical events, legendary figures or local agricultural products and cover anything from an entire continent to a college campus. Drawn by specialized artists and illustrators, pictorial maps are a rich, centuries-old tradition and a diverse art form that ranges from cartoon maps on restaurant placemats to treasured art prints in museums.
The International Cartographic Association (ICA) is an organization formed of national member organizations, to provide a forum for issues and techniques in cartography and geographic information science (GIScience). ICA was founded on June 9, 1959, in Bern, Switzerland. The first General Assembly was held in Paris in 1961. The mission of the International Cartographic Association is to promote the disciplines and professions of cartography and GIScience in an international context. To achieve these aims, the ICA works with national and international governmental and commercial bodies, and with other international scientific societies.
A national mapping agency (NMA) is an organisation, usually publicly owned, that produces topographic maps and geographic information of a country. Some national mapping agencies also deal with cadastral matters.
(John) Brian Harley was a geographer, cartographer, and map historian at the universities of Birmingham, Liverpool, Exeter and Wisconsin–Milwaukee. He helped found the History of Cartography Project and was the founding co-editor of the resulting The History of Cartography. In recent years, Harley's work has gained broad prominence among geographers and social theorists, and it has contributed greatly to the emerging discipline of critical cartography.
The Ethiopia-United States Mapping Mission, also known as the Ethi-U.S. Mapping Mission, was an operation undertaken by the United States Army during the 1960s to provide up-to-date topographic map coverage of the entire country of Ethiopia. The soldiers who conducted the mapping operations on the ground during that time used the latest surveying and mapping techniques and were exposed to many hardships and dangers, but they completed their mission near the end of the decade. The maps that were created still serve as the base maps for the country of Ethiopia and are presently being updated and maintained by the Ethiopian Mapping Authority.
Cartographic propaganda is a map created with the goal of achieving a result similar to traditional propaganda. The map can be outright falsified, or created using subjectivity with the goal of persuasion. The idea that maps are subjective is not new; cartographers refer to maps as a human-subjective product and some view cartography as an "industry, which packages and markets spatial knowledge" or as a communicative device distorted by human subjectivity. However, cartographic propaganda is widely successful because maps are often presented as a miniature model of reality, and it is a rare occurrence that a map is referred to as a distorted model, which sometimes can "lie" and contain items that are completely different from reality. Because the word propaganda has become a pejorative, it has been suggested that mapmaking of this kind should be described as "persuasive cartography", defined as maps intended primarily to influence opinions or beliefs – to send a message – rather than to communicate geographic information.
The International Map of the World was a project to create a complete map of the world according to internationally agreed standards. It was first proposed by the German geographer Albrecht Penck in 1891.
Alexey V. Postnikov is an internationally known specialist on the History of Science, with particular emphasis on the geography and cartography of Russia and these countries that have been under Russian influence from the 17th through the 20th centuries.
The Army Map Service (AMS) was the military cartographic agency of the United States Department of Defense from 1941 to 1968, subordinated to the United States Army Corps of Engineers. On September 1, 1968, the AMS was redesignated the U.S. Army Topographic Command (USATC) and continued as an independent organization until January 1, 1972, when it was merged into the new Defense Mapping Agency (DMA) and redesignated as the DMA Topographic Center (DMATC). On October 1, 1996, DMA was folded into the National Imagery and Mapping Agency (NIMA), which was redesignated as the National Geospatial-Intelligence Agency (NGA) in 2003.
Cartography of Latin America, map-making of the realms in the Western Hemisphere, was an important aim of European powers expanding into the New World. Both the Spanish Empire and the Portuguese Empire began mapping the realms they explored and settled. They also speculated on the lands that were marked terra incognita. Indigenous groups created maps of their territories, some of which predated the arrival of the Europeans. Maps for Spain also projected "its particular sense of order, religion, and justice, or what was understood as policía in its new colonies." Maps could be a form of propaganda; empires used maps as a means to assert sovereignty over territory, even when the situation on the ground did not merit it. The Spanish crown mandated the creation of reports from indigenous towns in New Spain, the Relaciones geográficas, a major state-directed project for gathering information. with written descriptions and usually a map. A useful collection of articles pointing to some major issues in New World cartography has recently appeared. When other European powers began exploring and settling the zones that Spain and Portugal had claimed as their own, maps began to delineate the boundaries between empires. As Latin America nation-states coalesced following independence in the early nineteenth century, map making was a standard national project.
Alexander James Kent is a British cartographer, geographer and academic, currently serving as Vice President of the International Cartographic Association. He leads the Coastal Connections Project for World Monuments Fund and English Heritage and is honorary Reader in Cartography and Geographical Information Science at Canterbury Christ Church University (CCCU) and also a senior research associate of the Oxford Centre for Islamic Studies at the University of Oxford.
