A world map refers to a map depicting the whole earth's surface, which is generally painted with terrain, longitude and latitude lines, and marked with data such as place names. Users can use latitude and longitude lines to find out the specific locations of various places on the world map, so as to understand the whole world. There are many ways to project the earth's surface onto a plane.
The world map is a map depicting the whole surface of the earth. It is drawn by map projection method and represented by marks, figures and words on the plane. There are longitude, latitude, national boundaries, place names, oceans, land and so on. It plays an important role in geography, politics and natural science. The map of the world has been drawn by scholars through field trips since ancient times. After the appearance of artificial satellites, map drawing became more accurate.
Traffic classification
Two kinds of world maps are popular in the world. One is the world map of the Pacific pattern with the Atlantic meridian as the dividing line, which can also be called the "Pacific World Map", which completely expresses the geographical relationship around the Pacific Ocean and divides the Atlantic Ocean on both sides of the map. The other is the world map of the Atlantic pattern with the Pacific meridian as the dividing line, which can also be called the "Atlantic version of the world map". It completely expresses the geographical relationship of ring the atlantic and divides the Pacific Ocean on both sides of the map.
The reason why these two versions of the world map have become worldwide versions is that they have followed two important principles when compiling the world map, namely, the principle of not cutting or cutting less land and the principle of dividing the map with the whole 15 latitude and longitude lines.
In the representation of the world map, it is more important to choose the central meridian, which is not only the center line projected on the map, but also the symmetry axis of the projection. Representing the elements of the whole sphere on the world map is equivalent to cutting and unfolding the sphere in one direction.
The above contents refer to Baidu Encyclopedia-World Map.