Autodesk CIVIL3D Tutorial - Page 87
Import surface data from a point file, In the Add Point File dialog box
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Import surface data from a point file 1 Expand the EG surface ➤ Definition collection. Right-click Point Files. Click Add. 2 In the Add Point File dialog box, in the Format list, select ENZ (Comma Delimited). 3 Click at the end of the Source File(s) field. 4 In the Select Source File dialog box, ensure that the Files Of Type field is set to (*.csv). 5 Navigate to the tutorial folder (page 820). Select LIDAR_ENZ (comma delimited).csv. Click Open. 6 In the Add Point File dialog box, clear both the Do Elevation Adjustment If Possible and Do Coordinate Transformation If Possible check boxes. Click OK. The point data is added to the drawing. A reference to the point file is added to the EG surface definition. The presence of point data in the surface definition is indicated by the marker next to the Point Files item on the Prospector tab. 7 Zoom in to the lower right corner of the surface. Notice that only points that are inside the data clip boundary have been imported, and that a green border was created from the imported data. The border is outside the red data clip boundary in some areas, and inside the data clip boundary in other areas. This happened because points in the point file that are outside the data clip boundary were excluded during the import operation. The green border is formed by the points at the outermost extents of the points that were imported. Exercise 1: Limiting Imported Surface Data | 75
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