Standard line: a line on a map projection along which the scale factor is 1.0. Map projection: transformation between angular coordinates and planar coordinates.Ĭoordinate system: a method of assigning a unique index to mapped locations, typically in the form of an east/west value and a north/south value, and possibly an elevation value.ĭevelopable surface: a surface that can be flattened to a plane without introducing distortion from compression or stretching.Ĭonformal: a map projection that preserves local angles.Įqual area (or equivalent): a map projection that preserves relative areas.Ĭompromise: a map projection that balances between area and angular distortion to emphasize aesthetics over specific map properties. Working with projections in an online world.
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