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National-atlas-general-reference-map-USA.png (735 × 495 pixels, file size: 138 KB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
In this, they contrast with general reference maps, which focus on the location (more than the properties) of a diverse set of physical features, such as rivers, roads, and buildings. [ 2 ] [ 3 ] Alternative names have been suggested for this class, such as special-subject or special-purpose maps , statistical maps , or distribution maps , but ...
General-purpose maps provide many types of information on one map. Most atlas maps, wall maps, and road maps fall into this category. The following are some features that might be shown on general-purpose maps: bodies of water, roads, railway lines, parks, elevations, towns and cities, political boundaries, latitude and longitude, national and ...
[c] [5] A travel atlas may also be referred to as a road map. [6] A desk atlas is made similar to a reference book. It may be in hardback or paperback form. There are atlases of the other planets (and their satellites) in the Solar System. [7] Atlases of anatomy exist, mapping out organs of the human body or other organisms. [8]
The same applies to other reference surfaces used as models for the Earth, such as oblate spheroids, ellipsoids, and geoids. Since any map projection is a representation of one of those surfaces on a plane, all map projections distort. [5] Tissot's indicatrices on the Mercator projection
Recent editions of these maps (those referenced to the North American datum of 1983, or NAD83) are compatible with USNG, and current editions also contain a standard USNG information box in the collar which identifies the GZD(s) (Grid Zone Designator(s) and the 100 km Grid Square ID(s) covering the area of the particular map. USNG can now be ...
Given that every projection gives deformations, each country's needs are different in order to reduce these distortions. These national projections, or national Coordinate Reference Systems are officially announced by the relevant national agencies. The list below is a collection of available official national projected Coordinate Reference ...
Cartographic generalization, or map generalization, includes all changes in a map that are made when one derives a smaller-scale map from a larger-scale map or map data. It is a core part of cartographic design .