I am currently working on glare analysis using Honeybee, and I am facing difficulties when trying to run a single-hour glare simulation.
My goal is to obtain Daylight Glare Probability (DGP) values for one specific hour in the year.
I tested both the HB Annual Glare (imageless glare analysis) and HB Glare from HDR workflows. In both cases, the results are either zero or unrealistic.
To control the period, I used the Analysis Period component for one hour. I also tested with a Clear Sky component to define specific day/hour conditions. However, the outputs remain strange (either 0 or not matching expectations).
I also tried multiple weather files (Charlottesville airport, Richmond, Los Angeles, DC), but the issue persisted.
I have attached my Grasshopper file and screenshots showing the setup (annual glare, analysis period, and sky components connected).
Could anyone advise on:
The correct way to extract DGP for a single hour in Honeybee?
Whether this workflow requires a different approach (e.g., point-in-time glare analysis instead of annual glare)?
If you are only looking at a single hour, then I would not use the imageless glare analysis. In any case you should be aware of the limitations of the imageless method; you can read more about this under Recommendations (page 7 of 8) in Nathaniel’s paper.
Thank you both
can I use the HDR-I result from HB analysis in evalglare ? because when i try to check the HDR-I in its location it’s always just a white image with nothing but white color.
