Foliage crown factor (Heat Overlay): Difference between revisions
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The crown factor is used because the extend of foliage itself is not consistently available as geographical data in [[geo-services for land]] use. Instead, only the extent of tree trunks may be recorded. | The crown factor is used because the extend of foliage itself is not consistently available as geographical data in [[geo-services for land]] use. Instead, only the extent of tree trunks may be recorded. | ||
==Notes== | |||
* Foliage can be calculated based on the FOLIAGE_CROWN_FACTOR. This calculation can be superseded when the [[DRPA Heat Module|Heat Overlay]] is configured to use either [[Area]]s or a [[GeoTiff]] to determine foliage height. In those cases the FOLIAGE_CROWN_FACTOR of constructions is unused. | |||
==How to== | ==How to== | ||
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==See also== | ==See also== | ||
* [[Foliage_height_calculation_model_(Heat_Overlay)|Foliage height calculation model]] | * [[Foliage_height_calculation_model_(Heat_Overlay)|Foliage height calculation model]] | ||
Revision as of 09:40, 20 December 2019
The foliage crown factor is used to calculate the extend of foliage, which can influence the calculation of the sky view and the shade. The height of the construction multiplied by the the crown factor yields the radius of the foliage.
The crown factor is used because the extend of foliage itself is not consistently available as geographical data in geo-services for land use. Instead, only the extent of tree trunks may be recorded.
Notes
- Foliage can be calculated based on the FOLIAGE_CROWN_FACTOR. This calculation can be superseded when the Heat Overlay is configured to use either Areas or a GeoTiff to determine foliage height. In those cases the FOLIAGE_CROWN_FACTOR of constructions is unused.