Nicolas Auguste Tissot
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Nicolas Auguste Tissot was a French cartographer, who in 1859 and 1881 published an analysis of the distortion that occurs on map projections.
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About this person
Nicolas Auguste Tissot was a French cartographer, who in 1859 and 1881 published an analysis of the distortion that occurs on map projections. He devised Tissot's indicatrix, or distortion circle, which when plotted on a map will appear as an ellipse whose elongation depends on the amount of distortion by the map at that point. The angle and extent of the elongation represents the amount of angular distortion of the map. The size of the ellipse indicates the amount that the area is distorted.
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