3.3.6 Terrain Ruggedness Index (TRI)

Terrain Ruggedness Index (TRI) Widget

Fig. 3.13 Terrain Ruggedness Index (TRI) Widget

The TRI widget creates a new raster based on the calculated Terrain Ruggedness Index (TRI) from an input DEM raster.

3.3.6.1 Usage

  1. Select the input DEM raster. You can either select from imported rasters using the Input
    combo box or select one from your PC (1).
  2. Select the output TRI raster location. You can either type in the absolute file path
    yourself or pick one with a dialog (2).

  3. Start the calculation (4)

If you want to use the created TRI raster in your LSAT Project you need to import it using the Import Raster Widget.

Clicking on Cancel (3) closes the widget.

3.3.6.2 Input and Output

Input

Digital Elevation Model raster dataset (.tif)

Output

Terrain Ruggedness Index (TRI) raster dataset (.tif)