Diva daylight Analysis results seem odd, any ideas what could be the problem?

by Ninja

Apr 16, 2014

Hi There,

I just modeled a very simple room with one window, when I run Diva for Grasshopper I get very strange illuminance values, I get very high values around all 4 interior wall edges and very low values in the middle of the room ? please help, I need to solve this problem in a quick manner because it is a school project.

also I noticed that the analysis mesh face normal says (0,0,-1) , isn't it supposed to be (0,0,1) may be that's what is causing the very odd results?

  • up

    Mostapha Sadeghipour Roudsari

    I don't have DIVA so I cannot test your file but 0,0,-1 can be the reason of the issue. You probably need to flip the base surface (or just reverse the vectors).

    1

    Apr 16, 2014

    • up

      Vicente Soler

      The problem is that the perimeter vertices of the mesh you are calculating are touching the outside surface of the walls, so light is leaking to them. Add a small gap by offsetting the horizontal surface a bit to the inside.

      1

      Apr 17, 2014