Extract Surface

Usage Instructions

Based on TIN terrain tile data, the Extract Surface function supports extracting TIN terrain data of specified levels within a designated range, and saves the extraction results as a model dataset.

Function Entry

  • 3D Data tab -> TIN Terrain group -> TIN Tools -> Extract Surface

Operation Steps

  1. Right-click Data Source in the Workspace Manager, select Open File-based Data Source, and open the required data source.
  2. In the 3D Data tab, within the TIN Terrain group, click the Extract Surface button in the TIN Tools drop-down menu, and the 'Extract TIN Surface' dialog box will pop up.
  3. Source Path: Click the open file path button on the right side of the source path, select the configuration file (*.sct) of the TIN terrain tile to be operated in the pop-up 'Open' dialog box; or directly enter the absolute storage path of the TIN tile's configuration file in the text box.
  4. Data Source: Click the drop-down menu on the right to select the data source containing the vector polygon data used to specify the extraction range.
  5. Range Polygon: Click the drop-down menu on the right to select the polygon dataset that represents the extraction range.
    Notes:

    To ensure normal operation of the function, the coordinate system of the range polygon must match the scene type of the TIN terrain tile:

    • For TIN terrain tiles with a spherical scene type, the coordinate system of the range polygon can be a geographic coordinate system or a projected coordinate system.
    • For TIN terrain tiles with a planar scene type, the coordinate system of the range polygon can be a planar coordinate system or a projected coordinate system.
  6. Specify Level: Select the specified level from the drop-down menu on the right to extract TIN terrain tile data of the corresponding level.
  7. Data Source: Click the drop-down button on the right to select the result data source for storing the result model dataset.
  8. Dataset: Set the name of the result model dataset.
  9. After setting is completed, click OK to perform the Extract TIN Surface operation. After the operation is completed, the result model dataset will be generated in the specified data source.