Foliage crown factor (Heat Stress Overlay): Difference between revisions
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The foliage crown factor is used to calculate the | The foliage crown factor is used to calculate the extent of foliage, which can influence the calculation of the sky view and the shade. The height of the Building multiplied by the crown factor yields the diameter of the foliage. | ||
The crown factor is used because the | The crown factor is used because the extent of foliage itself is not generally available as geographical open data. Instead, often only the extent of tree trunks is provided. | ||
{{article end | {{article end | ||
|notes= | |notes= | ||
* Foliage can be [[Foliage height calculation model (Heat Overlay)|calculated]] based on the FOLIAGE_CROWN_FACTOR. This calculation can be superseded when the [[Heat Overlay]] (set to use the [[DPRA Heat Module]]) is configured to use either [[Area]]s or a [[GeoTIFF]] to determine foliage height. In those cases the FOLIAGE_CROWN_FACTOR of [[Building]]s is unused. | * Foliage can be [[Foliage height calculation model (Heat Stress Overlay)|calculated]] based on the FOLIAGE_CROWN_FACTOR. This calculation can be superseded when the [[Heat Stress Overlay]] (set to use the [[DPRA Heat Stress Module]]) is configured to use either [[Area]]s or a [[GeoTIFF]] to determine foliage height. In those cases the FOLIAGE_CROWN_FACTOR of [[Building]]s is unused. | ||
|seealso= | |seealso= | ||
* [[Foliage height calculation model (Heat Overlay)]] | * [[Foliage height calculation model (Heat Stress Overlay)]] | ||
* [[Foliage crown factor (Function Value)]] | * [[Foliage crown factor (Function Value)]] | ||
|howtos= | |howtos= | ||
* [[How to adjust the foliage height and crown factor]] | * [[How to adjust the foliage height and crown factor]] | ||
* [[Trees and foliage tutorial]] | * [[Trees and foliage tutorial]] | ||
|api=* [[Api session event editor building set attribute]] | |||
* [[Api session event editor functionoverride set attribute]] | |||
}} | }} | ||
{{HeatOverlay model attribute nav}} | {{HeatOverlay model attribute nav}} | ||
Latest revision as of 08:09, 14 July 2026
| Icon | Attribute | Unit | Range | Description |
|---|---|---|---|---|
| FOLIAGE_CROWN_FACTOR | ratio | The ratio between the height of tree trunks and the diameter of the foliage of the tree. |
The foliage crown factor is used to calculate the extent of foliage, which can influence the calculation of the sky view and the shade. The height of the Building multiplied by the crown factor yields the diameter of the foliage.
The crown factor is used because the extent of foliage itself is not generally available as geographical open data. Instead, often only the extent of tree trunks is provided.
Notes
- Foliage can be calculated based on the FOLIAGE_CROWN_FACTOR. This calculation can be superseded when the Heat Stress Overlay (set to use the DPRA Heat Stress Module) is configured to use either Areas or a GeoTIFF to determine foliage height. In those cases the FOLIAGE_CROWN_FACTOR of Buildings is unused.
How-to's
See also
API Endpoints
- Group
- Model attributes
- Daily average radiation • Daily average wind speed • Daily maximum temperature • Daily minimum temperature • Dates • Exclude buildings • Exclude water • Exclude foliage height m • Foliage areas • Hourly humidity • Hourly radiation • Hourly temperature • Max shadow distance • Sun altitude • Sun azimuth • Sun daily motion • Wind direction • Wind speed • Wind decline angle
- Group
- Building attributes
- Bowen ratio • Foliage height • Foliage crown factor • Vegetation fraction
- Terrain attributes
- Bowen ratio • Vegetation fraction
- Area attributes
- Foliage height
- Group
- Prequels
- Building elevation • Foliage height • Terrain elevation
- Related