Dear All,
I wonder if I can use ECOTECT to determine VDF, which is defined as the daylight available on the window of the vertical building facade. Since VDF is the sum of VSC, GRC and ERC, it seems that only VSC can be calculated. Can anyone help me on dealing with GRC and ERC? For the details of VDF, plz visit the following notes/papers:
http://www.bd.gov.hk/english/documents/pnap/Pnap278.pdf
http://www.jstage.jst.go.jp/article/jlve/30/2/74/_pdf