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In computer graphics, the Cohen–Sutherland algorithm is an algorithm used for line clipping.The algorithm divides a two-dimensional space into 9 regions and then efficiently determines the lines and portions of lines that are visible in the central region of interest (the viewport).
In mathematics, the map segmentation problem is a kind of optimization problem. It involves a certain geographic region that has to be partitioned into smaller sub-regions in order to achieve a certain goal. Typical optimization objectives include: [1] Minimizing the workload of a fleet of vehicles assigned to the sub-regions;
The Nicholl–Lee–Nicholl algorithm is a fast line-clipping algorithm that reduces the chances of clipping a single line segment multiple times, as may happen in the Cohen–Sutherland algorithm. The clipping window is divided into a number of different areas, depending on the position of the initial point of the line to be clipped.
Image:Map of USA.png – United States with outlines for individual states. Image:Map of USA-bw.png – Black and white outlines for states, for the purposes of easy coloring of states. Image:BlankMap-USA-states.PNG – US states, grey and white style similar to Vardion's world maps.
Also, all states/provinces have a "id" attached to them, making them easy to find. Select "find" and then enter in the state/provinces's ISO 3166-2 code in the "id" field to find it. The codes can be found here (Canada) and here (USA). Date: 3 July 2007: Source: Vector map BlankMap-USA-states-Canada-provinces.svg. Modified by Lokal_Profil
Initially it is given all the points between the first and last point. It automatically marks the first and last point to be kept. It then finds the point that is farthest from the line segment with the first and last points as end points; this point is always farthest on the curve from the approximating line segment between the end points.
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A compound of two "line segment" digons, as the two possible alternations of a square (note the vertex arrangement). The apeirogonal hosohedron , containing infinitely narrow digons. Any straight-sided digon is regular even though it is degenerate, because its two edges are the same length and its two angles are equal (both being zero degrees).