…The most commonly used parallel coordinate system is one in which the two coordinate axes intersect at right angles and the lengths of OI and OJ are equal to the unit of length on a plane; this is called an orthogonal coordinate system. In contrast, a general parallel coordinate system is called a skew coordinate system. In an orthogonal coordinate system, the positive directions of the two coordinate axes are usually chosen so that when the x- axis is rotated 90 degrees counterclockwise around the origin O, the positive direction of the x- axis and the positive direction of the y- axis coincide. … *Some terminology explanations that mention "skew coordinates" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…もっともよく用いられる平行座標系は,両座標軸が直角に交わり,OIとOJの長さが平面上の長さの単位に等しいもので,これを直交座標系orthogonal coordinatesと呼んでいる。これに対し一般の平行座標系を斜交座標系skew coordinatesという。直交座標系では両座標軸の正の向きは,x軸を原点Oのまわりに時計の針のまわる向きと反対の向きに90度回転したときに,x軸の正の向きとy軸の正の向きが一致するように選ばれているのが通常である。… ※「skew coordinates」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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