This section mainly introduces various 3D spatial analysis operations and related precautions in 3D scene under operation mode. Three-dimensional spatial analysis refers to analyzing the position and shape of terrain, city fine model and building white model data in three-dimensional scene, and various hidden information can be obtained to assist decision-making.

Click the 3D Analysis button in the scene to pop up the 3D Analysis Settings panel. You can perform the following analysis operations:

• Cross-vision analysis : used to judge the cross-vision between any two points in a three-dimensional scene.
• Visibility Analysis : Analyzes visibility within a specified range in a 3D scene based on an observer point and its attributes.
• Sunlight analysis : supports calculation and feature extraction of undulations, contours or attributes of data on an interface.
• Skyline analysis : In the 3D scene, based on observation points and corresponding attributes, the skyline under the current viewing angle is obtained through analysis, and the skyline height limit body can be obtained based on the analysis result.
• Openness analysis : In a 3D scene, relative to a certain observer point, based on a certain observation radius, a "view hemisphere" is constructed to simulate the visibility around the observer point.