This transverse cylindrical equidistant projection is appropriate for large-scale maps with predominantly north-to-south extent. This equal-area projection was historically used to map continents. This interrupted projection takes a form of a star, and it is used by the American Association of Geographers (AAG) in their logo. This is a cylindrical equal-area projection with standard parallels at 30° north and south. It is used primarily for hemisphere maps. The projection preserves both distance and direction from the central point. The aspect ratio must be between 0.3 and 1. This compromise map projection adjusts the parallels to the height-to-width (aspect) ratio of a canvas. This equal-area conic projection is best suited for land masses extending in an east-to-west orientation at mid-latitudes. This compromise modified azimuthal projection takes the form of an ellipse. It is a conformal projection except in the four corners of the square. This projection shows the world in a square.
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