Postman coding can render request results visualization. Tests add visual code may be a request to render the body Visualize tab.
Visualization tools can help you understand the data request. You can use visualization tools to easily focus on useful information, rather than raw data difficult to read.
Visualization data in response to data requests need to write code or Tests in Pre-request. pm.visualizer.set()Visualization will run the code, the data presented in the Visualize tab.
https://learning.getpostman.com/docs/postman/sending-api-requests/visualizer/