# Portal:Maps

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 Main page Maps

## The Maps and Cartography Portal

World map by Gerard van Schagen, Amsterdam, 1689

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.

Although the earliest maps known are of the heavens, geographic maps of territory have a very long tradition and exist from ancient times. The word "map" comes from the medieval Latin: Mappa mundi, wherein mappa meant 'napkin' or 'cloth' and mundi 'the world'. Thus, "map" became a shortened term referring to a two-dimensional representation of the surface of the world. (Full article...)

Cartography (/kɑːrˈtɒɡrəfi/; from Greek χάρτης chartēs, "papyrus, sheet of paper, map"; and γράφειν graphein, "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. (Full article...)

## Selected article - show another

The bottom part of the diagram shows some contour lines with a straight line running through the location of the maximum value. The curve at the top represents the values along that straight line.

A contour line (also isoline, isopleth, or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. It is a plane section of the three-dimensional graph of the function ${\displaystyle f(x,y)}$ parallel to the ${\displaystyle (x,y)}$-plane. More generally, a contour line for a function of two variables is a curve connecting points where the function has the same particular value.

In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes. The contour interval of a contour map is the difference in elevation between successive contour lines. (Full article...)

## General images - load new batch

The following are images from various map-related articles on Wikipedia.

## Selected biography - show another

John Paul Goode (21 November 1862 – 5 August 1932), a geographer and cartographer, was one of the key geographers in American geography’s Incipient Period from 1900 to 1940 (McMaster and McMaster 306). Goode was born in Stewartville, Minnesota on November 21, 1862. Goode received his bachelor's degree from the University of Minnesota 1889 and his doctorate in economics from the University of Pennsylvania in 1903. Later on in 1903, he was offered a position as a professor in the Geography Department at the University of Chicago (Haas and Ward 241, 243). (Full article...)

## Selected picture

 Credit: NASA
Antarctica, the continent surrounding the Earth's South Pole, is the coldest place on earth and is almost entirely covered by ice. Antarctica was discovered in late January 1820. Too cold and dry to support virtually any vascular plants, Antarctica's flora presently consists of around 250 lichens, 100 mosses, 25-30 liverworts, and around 700 terrestrial and aquatic algal species.

## World

 Credit: Ævar Arnfjörð Bjarmason
Tectonic plates and movement of the earth.

## Historical

 Credit: Abraham Ortelius
World map from the first modern atlas by Ortelius - Theatrum Orbis Terrarum, 1570

## Thematic

 Credit: USDA

## Geographic

 Credit: USGS
Yellowstone National Park sits on top of three overlapping calderas.

## Political

 Credit: University of Texas
Soviet Union administrative divisions and sub-divisions, 1989.

## Nautical

 Credit: USGS

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## Things you can do

 WikiProject: Geography Here are some Geography related tasks you can do:

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