Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Technically, OpenStudio reports DGPs (DGP-simplified), which does not take specific source luminance into account, at least not source size and position index. It just calculates illuminance at the point, which is meant to represent the eye. So you have the cosine weighted integral of all the luminance in the hemisphere. It's very much a dumbed down metric, but it's easy and fast to calculate.
Yes, the glare sensor is meant to represent the (seated) eye (hence its default height of 4'0" AFF), and the arrow points in the direction of the viewer, or represents the primary view. You can add additional view vectors, or vantage points, arrayed about that point. They are evenly distributed about the point, for the full 360 degrees. The idea there was to support the "adaptive zone" concept by Jacubiec, albeit crudely.
The results are saved in output/glare.json; you get the 8760 values of DGPs and the eye illuminance they were calculated from. Unfortunately, we do not have a report measure that visualizes this data.
