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Lambert Azimuthal Equal-Area Projection is an equal-area azimuthal projection proposed by German mathematician Johann Heinrich Lambert in 1772. This projection maps points on the earth’s surface onto a plane through spherical projection, keeping the projection area unchanged, that is, the area ratio of the area before and after the projection is strictly equal. There is no deformation at the center of the projection, and as the distance from the center increases, the angle and shape deformation gradually increase, but the area deformation is always zero.