WORLD MAP BY EQUATORIAL PROJECTION

To draw a world map with a small amount of distortion in a bearing or a mutual position relationship in a form close to a sphere which is an original shape of the earth on a plane by correctly expressing a shape and an area of land and sea and accurately arranging them on points on coordinates of a...

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1. Verfasser: KAWAI NOBUO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To draw a world map with a small amount of distortion in a bearing or a mutual position relationship in a form close to a sphere which is an original shape of the earth on a plane by correctly expressing a shape and an area of land and sea and accurately arranging them on points on coordinates of a longitude and a latitude.SOLUTION: A world map capable of displaying each continent without dividing by arranging a western hemisphere vertically divided at 10 degrees west longitude and 170 degrees east longitude on right, and an eastern hemisphere on left and further adding a 10 degrees meridian outside without either land being divided with few straight lines as a latitude line is separated from an equator and changed into a curve along roundness of the earth. 80 degrees meridian of both poles are perfect circles, and when a point is placed on a coordinate of a latitude and a longitude, a map is completed having shapes of the land and the sea with little distortion just like from a bird's eye view is completed. The Antarctic continent alone is projected from the earth circle as an exception for easy understanding of its geography and size.SELECTED DRAWING: Figure 1 【課題】陸地と海洋の形状と面積を正しく表し、経度と緯度の座標上での当該地点を正確に配し、方位や相互の位置関係にもひずみの少ない世界地図を、地球本来の姿である球体に近い形で平面上に描写する。【解決手段】西経10度と東経170度で縦割りした西半球を右に、東半球を左に配し、さらに外側に10経度線を追加することにより、いずれの陸地をも分断されることなく表示できる世界地図であり、緯度線が赤道から離れるにつれて直線が少なく、地球の丸みに沿って曲線へと変化することを最大の特徴とする。両極の80緯度線を真円とし、当該地点を緯度と経度の座標に置けば、ひずみの少ない陸地と海洋の形状を、あたかも直上から俯瞰したかのような地図が完成する。当地図では例外として、南極大陸だけは地球円からはみ出させて、その地形と大きさが理解されやすいように書かれている。【選択図】図1