Cylindrical projection - Entouzuho (English spelling)

Japanese: 円筒図法 - えんとうずほう（英語表記）cylindrical projection

A general term for map projections in which the meridians on a map are represented as a grid of equally spaced parallel lines, and the latitudes are represented as a grid of parallel lines perpendicular to the meridians. It is equivalent to using a cylinder with the Earth's axis as the projection surface. When there is one standard parallel, the projection surface is equivalent to a cylinder tangent to the equator, so it is called a tangent cylindrical projection, and when there are two standard parallels, it is equivalent to intersecting the Earth at two latitudes, so it is called a split cylindrical projection. In a cylindrical projection, the distortion of the map projection is equal on each latitude. In other words, the latitudes are equal distortion lines. A cylindrical projection in which the spacing of the latitudes on a map is equal is called an equidistant cylindrical projection. The equidistant cylindrical projection is also called a plate square projection because it is represented as a grid of squares, and the split equidistant cylindrical projection is also called a rectangular projection because it is a vertically long rectangle. Conformal cylindrical projections are specifically called Mercator projections. The spacing of the latitudes increases as the latitudes increase, and the poles are not represented. The equal-area cylindrical projection is called the Lambert projection after its creator. The equal-area cylindrical projection is sometimes called the Behrmann projection. The higher the latitude, the closer the parallels are spaced. (→ Pseudocylindrical projection, Miller projection)

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

地図上の経線が等間隔の平行直線群，緯線がそれに直交する平行直線群となる方眼網の形に表わされる地図投影法の総称。地軸を軸とする円筒を投影面とすることに相当する。標準緯線が1つの場合は，投影面の円筒が赤道に接することに相当することから接円筒図法，2つの場合は，2つの緯線上で地球と交わることに相当することで割円筒図法と呼ばれる。円筒図法では緯線ごとにその上では地図投影のひずみが等しい。つまり緯線が等ひずみ線となる。地図上の緯線の間隔が等しくなる円筒図法を正距円筒図法という。正距接円筒図法は正方形の方眼網で表わされることから正方形図法ともいい，正距割円筒図法は縦長の長方形となることから長方形図法とも呼ばれる。正角円筒図法は特にメルカトル図法という。高緯度になるほど緯線の間隔が広がり，両極は表わされない。正積円筒図法は，考案者にちなんでランベルト図法と呼ばれる。正積割円筒図法はベールマン図法と呼ばれることもある。高緯度になるほど緯線の間隔がつまって表わされる。 (→擬円筒図法 ,　ミラー図法 ) 　

出典　ブリタニカ国際大百科事典小項目事典ブリタニカ国際大百科事典小項目事典について　情報

<<: Roadside Development Plan - Endo Seibikeikaku

>>: Shinnosuke Endo