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  2. Topography - Wikipedia

    en.wikipedia.org/wiki/Topography

    Digital Elevation Models, for example, have often been created not from new remote sensing data but from existing paper topographic maps. Many government and private publishers use the artwork (especially the contour lines) from existing topographic map sheets as the basis for their own specialized or updated topographic maps. [9] Topographic ...

  3. Topographic map - Wikipedia

    en.wikipedia.org/wiki/Topographic_map

    Sergeant Chris D. Washington checking his Topographic map during a morning deer hunt in Kilgore, Texas A topographic map of Stowe, Vermont with contour lines Part of the same map in a perspective shaded relief view illustrating how the contour lines follow the terrain Sheet #535 (2013 version; second digital edition) of MTN50 Spanish National Topographic map series, covering Algete town (near ...

  4. Draw (terrain) - Wikipedia

    en.wikipedia.org/wiki/Draw_(terrain)

    Example on a topographical map, and how it would look in the real world. Typical draw, Little Carpathians. A draw, sometimes known as a re-entrant in orienteering, is a terrain feature formed by two parallel ridges or spurs with low ground in between them. The area of low ground itself is the draw, and it is defined by the spurs surrounding it.

  5. Cartography - Wikipedia

    en.wikipedia.org/wiki/Cartography

    A medieval depiction of the Ecumene (1482, Johannes Schnitzer, engraver), constructed after the coordinates in Ptolemy's Geography and using his second map projection. The translation into Latin and dissemination of Geography in Europe, in the beginning of the 15th century, marked the rebirth of scientific cartography, after more than a millennium of stagnation.

  6. History of cartography - Wikipedia

    en.wikipedia.org/wiki/History_of_cartography

    Also in the 17th century, an edition of a possible Tang dynasty map shows clear topographical contour lines. [41]: 546 Although topographic features were part of maps in China for centuries, a Fujian county official Ye Chunji (1532–1595) was the first to base county maps using on-site topographical surveying and observations. [63]

  7. Seth Eastman - Wikipedia

    en.wikipedia.org/wiki/Seth_Eastman

    Seth Eastman, Treatise on Topographical Drawing, New York: Wiley and Putnam, 1837. His textbook on the techniques of map-making and map-reading was made mandatory for all topography classes at West Point. Eastman created symbols for use on all maps, and explained how to draw height, width, and depth on a two-dimensional sheet of paper.

  8. Terrain cartography - Wikipedia

    en.wikipedia.org/wiki/Terrain_cartography

    USGS topographic map of Stowe, Vermont with contour lines at 20-foot intervals. Terrain cartography or relief mapping is the depiction of the shape of the surface of the Earth on a map, using one or more of several techniques that have been developed.

  9. Watershed delineation - Wikipedia

    en.wikipedia.org/wiki/Watershed_delineation

    The conventional method of finding a watershed boundary is to draw it by hand on a paper topographic map, or on a transparent overlay.The watershed area can then be estimated using a planimeter, by overlaying graph paper and counting grid cells, or the result can be digitized for use with mapping software.

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