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.

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)
• Traffic Overlay
  • Min tree height m (Traffic Overlay)
  • Min tree height m (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 area (Heat Stress Overlay)
• Foliage prequel (Heat Stress Overlay)

Notes

• 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
• Trees and foliage tutorial

See also

• Building
• Function
• List of Functions

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