How to create a base site layer using Global Mapper? There may be many friends who don’t know how to do it yet, so those who don’t know how to do it should come and learn with the editor how to create a base site layer with Global Mapper. I hope that through this tutorial Learning can help everyone.

​ ​ 1. According to the data import format requirements, create the imported data (including base station name, longitude, latitude and other fields), as shown in the figure below, and save the relevant data in *.CSV or *.TXT format.

Note: The name of the communication base station and related parameters involved in this article are simulation parameters and do not exist in reality.

​ ​ 2. Use Global Mapper "File >> Open General ASCII Text File" and import it, and set the coordinate system of the projection. Generally, the default is enough, such as WGS84, as shown in the figure below.

​ ​​Note: The imported files are *.CSV or *.TXT files, not *.XLS (Excel file format).

​ ​ 3. Set the "Universal ASCII text file import option", and then you can import points in batches. Setting the "Universal ASCII text file import options" is a critical step. The main points are as follows:

1. Import type

Here we mainly create a point layer, so we select "Only points (all primitives are points)".

2. Coordinate column order/format

There are three points to note: (1) Set the column order of coordinates: the data format we created is the "longitude" column, and the "latitude" column is last, so select the option "X/Eastward/Latitude coordinate data first" . Otherwise, select the "Y/North/Latitude coordinate data first" option. (2) Set the number of rows of file coordinate point data: In the data we create, the first row is the attribute name row, and the second row is the data row. If we enter 0, the attribute name will not be imported. If we enter 1, then the row will be Start by skipping 1 row of fields, enter 2 if the data is in row 2, and so on. (3) Set the coordinate data format: If the coordinate data is in decimal degrees, select decimal numbers (default). If it is degrees, minutes and seconds data, press the drop-down menu and select "Degrees as DDDMMSS.S". If it is integer degrees, minutes and decimal minutes format, select "The degree is DDDMM.SS", the format produced here is decimal format, just press the default.

3. Set the column where the coordinates are located

The coordinate data in the data we created here is located in the 5th column, so 4 columns must be skipped, that is, "fill in 4 in the skip column at the beginning of the file", and so on.

​ ​ 4. After the relevant parameters are set, the relevant sites can be imported, and the effect is as shown in the figure below.

Note: The picture below shows the effect of loading the map layer after importing points. If there is no actual map, it will only be a single point.

The above is the method shared by the editor to create a base site layer with Global Mapper. Friends in need can read this article.