Specify Additional Points In this tour guide, additional points are also provided to ensure the accuracy of your output DEM. The points were collected as 3D mass points using Stereo Analyst and are contained in an ASCII text file.
1. Click the Use User Defined Points checkbox. The Import button becomes active.
2. Click the Import button to open a File Selector.
3. Navigate to /examples/orthobase/laguna_beach and select check_points.txt.
4. Click OK in the File Selector. The Reference Import Parameters dialog opens. This dialog is provided to input the projection that was used to collect those check points. In this example, the projection is already correctly set to UTM.