Q: How can I set a railway with the width of 15 meters?

A: Firstly, create a new 3D symbol in the resource library. There will be 100*100 small grid cells in the symbol editing area. The horizontal filling of 100 small grid cells is 1 meter. If 50 small grid cells are filled in the horizontal direction, the actual length is 0.5 meters. Secondly, load the data into the scene and set the layer style for the data. If the actual length in the resource library is 1 meter, set the symbol to 15 here. If the actual length in the resource library is 0.5 meters, here set the size of the symbol to 30.