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Circular world map projection with meridians and parallels being arc lines

A technology of map projection and arc lines, which is applied in the field of world maps, can solve the problem of lack of aesthetic feeling in the appearance of the map, achieve the effect of beautiful and generous maps, and overcome the corners

Inactive Publication Date: 2017-10-31
李兴奇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing arc-line projection world map, because the meridian produces a knuckle at the equator, the map is rugby-shaped, and the appearance of the map lacks aesthetic feeling

Method used

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  • Circular world map projection with meridians and parallels being arc lines

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Embodiment Construction

[0011] Below in conjunction with accompanying drawing, the circular world map projection of latitude and longitude lines of the present invention will be described in detail below.

[0012] As shown in the accompanying drawings, the circular world map projection of the longitude and latitude lines of the present invention includes the central meridian and the equator, and is characterized in that the circle O is set; the arc-shaped meridian symmetrical to the central meridian is set; the symmetry is set on the equator arc-shaped weft.

[0013] The specific method of the circular world map projection of the longitude and latitude lines of the present invention is:

[0014] Set a circle O, divide the arc of the circle O into 24 equal parts, and divide the central meridian NS and the equator AB into 12 equal parts. Set the arc-shaped meridians symmetrical to the central meridian through the bisecting point F on the equator and N and S on the central meridian, and all arc-shaped ...

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Abstract

The invention relates to a circular world map projection with meridians and parallels being arc lines. The circular world map projection comprises the central meridian and an equator and is characterized in that a circle O is arranged, an arc line of the circle O is divided into 24 equal parts and the central meridian NS and the equator AB are respectively divided into 12 equal parts. Arc-shaped meridians symmetrical to the central meridian are arranged on equal division points F on the equator as well as N and S on the central meridian, and all the arc-shaped meridians symmetrical to the central meridian can be arranged in the same way; and arc-shaped parallels symmetrical to the equator are arranged on equal division points C and D on the arc line of the circle O as well as equal division points E of the central meridian NS, and all the arc-shaped parallels symmetrical to the equator can be arranged in the same way.

Description

(1) Technical field [0001] The invention relates to the field of world maps, in particular to compiling circular world map projections in which lines of latitude and longitude are circular arcs. (2) Background technology [0002] The existing world map projected by arcs has a rugby-ball shape due to the knuckles generated by the meridians at the equator, and the appearance of the map lacks aesthetic feeling. (3) Contents of the invention [0003] The technical task of the present invention is to compile the circular world map projection in which the lines of latitude and longitude are circular arcs. [0004] The technical solution adopted by the present invention to solve its technical problems is: [0005] The invention's longitude and latitude line is a circular world map projection of arc lines, including the central meridian and the equator, which is characterized by setting a circle O; [0006] The above-mentioned longitude and latitude lines are circular world map ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B29/00
CPCG09B29/003G09B29/005
Inventor 李兴奇
Owner 李兴奇