Display 3D

Dialog box

Create a three-dimensional view of your study area. Use an existing georeference 3D or create a new one.

A Digital Terrain Model (DTM), also called a Digital Elevation Model (DEM), is required to create a georeference 3D. For more information on creating a DEM, see How to calculate a DEM.

By relating any map with the corresponding terrain surface in a 3D model, you can discover and understand relations between spatial data sets. For example, by draping a land use map over the height values of a 3D model, you can see where your areas of interest are located: on slopes, on flat areas, in the lower areas, in the mountains, etc.

Although Display 3D was originally developed to model relief, it can of course also be used to model the continuous variation of any other value map as a surface (e.g. concentration values, land values).

This dialog box appears:

Dialog box options:

Georeference:

Select an existing georeference 3D, or create a new georeference 3D by clicking the create button.

When you create a new georeference 3D, the Create Georeference 3D dialog box appears. In that dialog box, you can specify the name of a DEM which should be used, and the size of the map window in which the 3D view should appear. After that, you return to this Display 3D dialog box.

When everything is OK, the Display Options - 3D Grid dialog box appears. The DEM can be displayed as 3D grid lines with or without a drape of a raster map.

To obtain a suitable perspective on the terrain, edit the georeference 3D with the Georeference 3D editor. When finished editing the 3D view, you can add point, segment and/or polygon maps and/or annotation to improve the 3D view.

See also: