In addition, the execution environment has performance constraints as a web browser. They are limited in their ability to provide functionality that the platform does not support. However, they have functional limitations as web browsers. These web-based platforms only require a web browser that supports web standards and WebGL they do not require the installation of additional libraries or programs. Cesium allows users to upload their own 3-D geospatial data to create and expand 3-D city models. We can use Google Earth to explore anywhere in the world with a web browser. Web-based geospatial platforms offer excellent user accessibility and convenience.

This simulated city can be used to study various urban phenomena and urban design scenarios. Virtual Singapore is a representative example of a simulation of a real city using digital geospatial data. It can digitally organize and visualize terrains, buildings, and other structures. A three-dimensional (3-D) geospatial platform is an essential part of a digital twin city. Digital twins are attracting attention as a technology that can be used to address various industrial and social problems and that has applications in manufacturing. It virtually simulates and predicts simulation results by creating digital twins of objects.

A digital twin is a digital model of a physical entity. A geospatial platform is the first step toward understanding the real world as a digital world.

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