Click Close in the Import Results dialog box, and your terrain appears at the origin point, as shown in the following figure.From the Format drop-down list, select DEM (*.dem, *.ddf).If you don’t see the terrain, click the Zoom Extents tool ( ). Click Close in the Import Results dialog box, and your terrain appears at the origin point.Click Import, and SketchUp imports your file.
Evaluation of a digital terrain model: Like other interpolated surfaces, digital terrain models are evaluated for their horizontal and vertical accuracy. Click Open, and SketchUp imports your file. This article is part of a sequence, after the creation of the DEM (download practice exercises), will incorporate a dike, will estimate the water mirror and the calculation of the volume dammed.Click OK in the DEM Import Options dialog box to return to the Open dialog box.(Optional) Select the Generate Gradient Texture checkbox if you’d like a gradient that’s darker in the low areas and lighter in the high areas to appear over your imported terrain.When you lower the number of points, you can improve the terrain’s performance in SketchUp, but the terrain will lose detail. If you like, you can adjust the number of points by entering a new number. (Optional) In the Points and Faces boxes, you see how many points (and subsequent faces) are created when you import the DEM file.The DEM Import Options dialog box appears. Navigate to the location where your DEM file is saved and select it.From the Files of Type drop-down list, select DEM (*.dem, *.ddf).