How to look at the graticule orientation method, how to determine the direction on the graticule

General practice first: first judge the north and the south: the same north latitude is the north, the same south latitude is the north, the same south latitude is the north, the north is the north, and the south is the south; Second:

Then in the east and west, the same east longitude is the east, the same west longitude is the small, one east and one west add less than 180 degrees east longitude is east, and the increase is 180 degrees west longitude is east, equal to 180 can be. In the top view, if you select the inferior arc, the direction of the arrow is east.

Mainly look at the numbers and the letters of identification, if the longitude increases from left to right, it is east longitude, and vice versa, it is west longitude, and the dividing line between the eastern and western hemispheres is 20 degrees east longitude and 160 degrees west longitude, so that you can judge the east-west direction.

The decrease of latitude from top to bottom is the north latitude, and the gradual increase is the south latitude, and the north-south direction can be judged with the equator as the boundary.

There are also the letters s s for south, e for east, w for west, and n for north.

The meridian runs north-south and indicates east and west. 20°W 160°E Eastern Hemisphere, 160°E 180° 20°W Western Hemisphere.

The parallels run east-west, indicating north and south. 0° is the equator, north is the north latitude, and south is the south latitude.

The focus of the longitude and latitude is located, first the longitude and then the latitude. e.g. Shanghai (120°E, 32°N).

East longitude and north latitude The north-south longitude runs north-south and indicates east and west. 20°W 160°E Eastern Hemisphere, 160°E 180° 20°W Western Hemisphere.

The parallels run east-west, indicating north and south. 0° is the equator, north is the north latitude, and south is the south latitude.

The focus of the longitude and latitude is located, first the longitude and then the latitude. e.g. Shanghai (120°E, 32°N).

The horizontal is the weft, and the vertical is the warp. The equator (zero degree of latitude) divides the earth into south (s) and north (n), and the prime meridian (zero degree longitude) divides the earth into east longitude (e) and west longitude (w).

The meridian line indicates the north and south and the latitude line indicates the east and west When judging the east and west, the degree difference between the two points is less than 180 The east point is the east and the east point is greater than 180 The east point is the west.

The meridian runs north-south and indicates east and west.

The parallels run east-west, indicating north and south.

The focus of the longitude and latitude is located, first the longitude and then the latitude.

The latitude line indicates the east-west direction, and the meridian line indicates the north-south direction.

The longitude in the east-west direction is indicated, and the latitude in the north-south direction is indicated.

The method of determining the direction on the graticule is to determine the north-south direction according to the longitude, and the east-west direction of the latitude line.

The method of judging the direction of latitude and longitude in geography: the meridian lines on the graticule diagram indicate the north-south direction, and the latitude lines indicate the east-west direction.

1. Looking at the latitude in the north-south direction, it is the same as the north latitude, and the one with the largest degree is in the north; It is also a southern latitude, and the one with the largest degree is in the south; One north latitude and one south latitude are north latitude and south latitude is south.

2. Looking at the longitude in the east-west direction, it is the same as the east longitude, and the degree is larger in the east; It is the same as the west longitude, and the one with the greater degree is in the west; If the sum of degrees is less than 180°, east longitude is in the east and west longitude is in the west, if the degree sum is greater than 180°, the east longitude is in the west and the west longitude is in the east. Extended information: To determine the latitude and longitude, you can refer to the special parallel:

Parallel: that is, the equator, is the longest parallel, the dividing line between the northern and southern hemispheres ° parallel:

The dividing line between low and mid-latitudes.

Latitude: The dividing line between middle and high latitudes.

Parallel: that is, the north and south poles, 90° north latitude is the north pole, and 90° south latitude is the south pole.

5. Latitude: The Tropic of Cancer is the dividing line between the tropics and the temperate zone, and the dividing line between direct sunlight and non-direct sunlight. The northern latitude is the Tropic of Cancer, and the southern latitude is the Tropic of Capricorn.

6. Latitude: The polar circle is the dividing line between the temperate zone and the cold zone, and the dividing line between the polar day and the polar night phenomenon. The northern latitude is the Arctic Circle, and the southern latitude is the Antarctic Circle.

See the direction of the Earth's rotation: the Earth rotates from west to east, the direction of the arrow is east, and the opposite direction is west. Facing the map, go up to north, down to south, left west and right east.

The graticule orientation method is one of the three commonly used methods for the direction of the map, and the other two are the general orientation method and the pointing marker orientation method. The most accurate is the graticule orientation method. The most commonly used is the general orientation method.

The graticule map is oriented according to the graticule, which is equivalent to a direction marker.

1.First of all, you have to find out the location of the North Pole according to the latitude distribution characteristics on the graticule map, and the North Pole is on the north and south along the meridian, and the left west and right east along the latitude. If the north pole is below, follow the meridian line to the south to the north, and follow the latitude line left east and right west.

2. The vertical line (ray) is the meridian line, and the meridian line indicates the north and south, so the north and south are judged along the meridian; The direction of a point on the same meridian is the relationship between true north and south. Those who are close to the North Pole are in the north, and vice versa are in the south.

3. Horizontal line (arc line...circle) is the line of latitude, and the line of latitude indicates the east and west, so the east and west are judged along the line of latitude; The direction of a point on the same parallel is the relationship between due east and west. Generally, on the graticule diagram, along the inferior arc latitude line is reversed from east to west.

General orientation method: up north and down south. Left, west, right, east.

Pointing Marker Orientation Method: Generally, there is a marker pointing north on the map. N is for North and S is for Difficult. e stands for East. W stands for West. Usually the map points to North (n).

The graticule orientation method is mainly used to judge the direction of the earth, so the graticule is equivalent to a direction marker, generally speaking, the meridian indicates the north and south, so the north and south direction can be judged along the meridian, and the latitude indicates the east and west, so the east and west direction is judged along the latitude. The graticule orientation method is mainly used to judge the direction of the earth, so the graticule is equivalent to a direction marker, generally speaking, the meridian indicates the north and south, so the north and south direction can be judged along the meridian, and the latitude indicates the east and west, so the east and west direction is judged along the latitude.

Ordinary graticule:

North-south direction according to latitude:

a. If the two points are in the same hemisphere (southern hemisphere), the greater degree is in the north (south), and the smaller degree is in the south (north).

b. If one of the two points is in the northern hemisphere and the other is in the southern hemisphere, the point in the southern hemisphere is in the south, and the point in the northern hemisphere is in the north The east-west direction is determined according to longitude

a. If the two points are both east longitude (west longitude), the larger degree is in the east (west), and the smaller degree is in the west (east).

b. If one of the two points is east longitude and the other is west longitude: if the longitude of the two is 180°, then the point located at east longitude is in the east and the point located in the west longitude is in the west; With a longitude of 180°, the point at west longitude is in the east and the point at east longitude is in the west.

Polar sky map:

According to the direction of rotation or judge the northern and southern hemispheres.

Counterclockwise (clockwise) rotates to a map centered on the North Pole (South Pole).

Determine the north-south direction.

A map centered on the North Pole (South Pole), which is the northernmost (southernmost) point of the Earth and any other location is due south (due north).

Determine the east-west direction.

The inferior arc orientation method is adopted, and then the point in the direction of the arrow is located in the east and the point in the direction of the arrow tail is in the west.

I don't understand, I don't explain it.

Take two points on the graticule, subtract the x coordinates, subtract the y coordinates, x y=e, and do the arctane function, that is, the angle between the line and the meridian line for these two points.

The meridian line is used to indicate the north-south direction, and the latitude line indicates the east-west direction to determine the relative direction of the two points.

The horizontal one is called the weft line, and the vertical one is called the warp line. The latitude refers to the east and west, and the meridian guides the north.

The longitude represents the eastern and western hemispheres, the latitude represents the northern and southern hemispheres, and the graticule can determine the north-south, east-west direction of a place, which is also oriented.

When I was in high school, I was a geography master, hehe, I haven't paid attention to it for a long time now, but looking back, it's quite interesting.