GIS Dictionary

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line of sight

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  1. [3D analysis] A line drawn between two points, an origin and a target, that is compared against a surface to show whether the target is visible from the origin and, if it is not visible, where the view is obstructed. Media/line-of-sight.gif
  2. [visualization] In a perspective view, the point and direction from which a viewer looks into an image.

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