Foliage crown factor (Heat Overlay)

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.

How to

• How to adjust the foliage height and crown factor

See also

• Foliage height calculation model

Notes

When configuring the Heat Overlay, different sources can be selected to define the Foliage height:

• Buildings with functions related to foliage. The foliage height calculation model will determine the foliage height using the height of the vegetation (as buildings) and the foliage crown factor attribute;
• Areas with as foliage height attribute, defining the foliage height for a whole area;
• GeoTiff, defining a foliage height value for each cell in its raster.