Zone Limits

•Zone limits can be entered either numerically via the input field or by Shift-clicking in the profile plot.

•Zone limits can be selected with the mouse in the profile plot. Selected zone limits are displayed with a bold blue line.

•Selected zone limits can be adjusted or deleted. If a zone limit is deleted, it must be decided which zone (left or right of the limit) is to be kept.

•It is also possible to delete all zone limits at once.

Indicator for selected zone

The red colored zone symbolizes the marked zone.

Zone Parameter Visualization

In this diagram, the parameters of all zones are plotted in an overview. The inverse hit distance is displayed for the forest. Damping and roughness correspond to the parameterization.

Selection lists for Zone Limits and Zones

Here you can select zone limits (left) or zones (right). A summary of the zone parameters is displayed in the zone list.

Selected Zone

All attributes of the selected zone:

•Damping: a value from 10 to 50 can be selected here. See also the theory of Damping.

•Roughness: a value from 1 to 19 can be selected. A roughness tool  for calculation is available. Theory for this under Roughness.

•Zone description: freely editable description of the zone.
 

•Forest Simulation Mode: here the simulation of forest can be activated. Different modelling approaches are available. Theory for this under forest parameterization.

•The "Normal" mode defines a forest zone via three parameters: Forest parameters a and b, as well as trees per hectare. Details on how to use Normal mode

•The "Distance" mode defines a forest zone using three parameters: Average tree diameter, inclined hit distance and slope. Details on how to use Distance mode
 

•Block Settings: see Block Definition

Forest Simulation Mode

The "Normal" mode defines a forest zone via three parameters: Forest parameters a and b, as well as trees per hectare.

General Forest Parameters

•The average trunk diameter at chest height is calculated from the forest parameters a and b.

•When simulating tree hits, a height limitation of the forest stand is taken into account. The degree of slenderness of the forest stand is used for height limitation. Blocks fly over trees whose height is greater than slenderness * trunk diameter. This degree of slenderness is currently fixed at 60. As soon as the flight height is less than or equal to the tree height, a hit is made immediately.

Forest Parameters "Normal"

•Forest parameters a and b: Defines the statistical distribution of the tree trunk diameter in the tree population.

•Trees (trunks) per hectare: Defines the density of the tree population.

•Inclined hit distance (calculated): Is calculated from the average tree diameter, the number of trees per hectare and the block dimension.

Visualization Forest Parameters a & b

For a better understanding of the forest parameters a and b the plot shows the statistical distribution of the tree trunk diameters as a histogram. In addition, the maximum tree height is plotted using the degree of slenderness.

Forest Simulation Mode

The "Distance" mode defines a forest zone using three parameters: Average tree diameter, inclined hit distance and slope.

General Forest Parameters

•The average tree diameter at chest height is entered here.

•When simulating tree hits, a height limitation of the forest stand is taken into account. The degree of slenderness of the forest stand is used for height limitation. Blocks fly over trees whose height is greater than slenderness * trunk diameter. This degree of slenderness is currently fixed at 60. As soon as the flight height is smaller or equal to the tree height, a hit occurs immediately. Using the average tree diameter and the degree of slenderness, the maximum tree height can be calculated to limit the height of the tree population.

Forest Parameters "Distance"

Inclined hit distance from field survey

•Terrain slope from the field survey. This is used to calculate the horizontal hit distance.