Computes how much sun reaches the walls of the buildings you choose. Use it to check sunlight on a planned building's windows or the effect on neighbouring buildings.
Steps
- In 解析追加 choose 壁面日影解析 (wall shadow) and a case (Running an analysis).
- Press 地図上で条件を設定, choose at least one building with 予測対象建物選択 (Select target building), then press 確定. You don't draw an area. See Setting conditions on the map for the map steps.
- Enter the conditions and press 計算開始.
The analysis area is set automatically around the selected buildings (widened by 30% of their spread or about 200 m, whichever is larger).
Conditions
The same as ground shadow: season, start and end time, calculation interval and output interval. The centre latitude comes from the selected buildings. Receptor height is not used for wall shadow.
Notes
In addition to the ground-shadow notes:
- Because of updates to the city model, some buildings may not be computable.
Results
The case and its result layers appear under サービス → 壁面日影解析. Results are drawn on the walls of the selected buildings; the default colours are 0–8 hours, as for ground shadow. To change them, see Editing display styles.