Tree

Trees are used and represented in the Tygron Platform the in the following ways:

• Trees are generally represented by Buildings, with a Tree Function.
• The MultiPolygon stored in a Section of an individual Tree is the tree trunk, not the tree foliage.
• The MultiPolygon stored in a Section of a part of a forest is the region where potentially tree trunks are located.
• The height of trees is calculated using the difference between the DTM and the DSM during the New Project Wizard phase.
• The height of trees is stored in the FLOOR_HEIGHT_M attribute, in amounts of meters.

Overlays

Tree (building)s and their properties are used in various overlays:

• Heat Stress Overlay
  • Foliage crown factor (Heat Stress Overlay)
  • Max trunk distance (Heat Stress Overlay)
  • Wind decline angle (Heat Stress Overlay)
  • FAQ Foliage Heat Stress Overlay
  • Foliage result type (Heat Stress Overlay)
  • Foliage height calculation model (Heat Stress Overlay)

• Shadow Overlay
  • Foliage crown factor (Shadow Overlay)
  • Foliage result type (Shadow Overlay)
• Traffic Overlay
  • Min tree height m (Traffic Overlay)
  • Min tree height m (Traffic NO2 Overlay)
  • Trees result type (Traffic NO2 Overlay)

• Water Overlay
  • Evapotranspiration model (Water Overlay)
  • Ground transpiration formula (Water Overlay)

Foliage

The Heat Stress Overlay (and Shadow Overlay) use Foliage of trees as input, either as:

• Buildings with TreeFunctions, calculating the foliage using the [[Foliage crown factor (Heat Stress Overlay)
• Foliage areas (Heat Stress Overlay)
• Foliage height prequel (Heat Stress Overlay)

Foliage can be detected using an Inference Overlay using the Foliage (Neural Network).

Notes

• The FLOOR_HEIGHT_M also affects how tall the tree is in the 3D Visualization.
• Roots of trees can be seen in the Underground visualization

How-to's

• How to import trees based on an Inference Overlay
• How to detect foliage using an Inference Overlay
• How to improve the estimated foliage overlay
• How to modify evaporation factor from trees to forests
• How to compute residential walls with sight of trees
• How to disable Tree placements from default Sources on Project creation
• Trees and foliage tutorial

See also

• Building
• Function
• List of Functions
• Foliage (Neural Network)
• TREES (Geo Option)

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