Tools/materials: Huawei p40, HarmonyOS2.00. 166, Tik Tok 18.9.0.

1, select three horizontal lines.

Open Tik Tok and click on the three horizontal lines under My Options.

Step 2 Choose a service center

In the pop-up menu bar, click Creator Service Center.

Step 3 select data

Enter the service center interface and click the data center.

The current form of data is divided into:

1, digital data, such as various statistics or measurement data. Digital data is a discrete value in a certain interval.

2. Analog data, consisting of continuous functions, refers to the physical quantities that change continuously in a certain interval, and can also be divided into graphic data (such as points, lines and surfaces), symbol data, text data and image data, such as the changes of sound volume and temperature.

According to the recording method, it is divided into maps, tables, images, magnetic tapes and paper tapes. It is divided into vector data and grid data. In GIS, the selection, type, quantity, collection method, detail and reliability of data depend on the application objectives, functions, structures and requirements of data processing, management and analysis.