Hi @OlivierDambron ,
This is intentional because all of the methods that perform postprocessing on the illuminance matrices to produce DA and UDI rely on the analysis being at a timestep of 1 in order to have the illuminance values correctly aligned with the occupancy schedule. I was thinking that I would eventually add support for running the annual daylight recipe at a finer timesteps but it requires a significant refactor of these postprocessing methods and so it would take some time.
So I guess it all comes down to what you need out of the analysis. If you don’t need DA or UDI out of the analysis and you just need the matrix of illuminance values, then it doesn’t take much time to make a recipe that does what you want. You’ll see that the Annual Irradiance recipe is perfectly fine with running Wea’s at finer timesteps as long as you also plug the timestep into the recipe. We really only need to tweak a couple of things in that recipe to turn it into an “Annual Illuminance” recipe. In fact, I can probably just add a solar/visible boolean option to the recipe if this would solve your issue.
But, if you need DA or UDI, then you’ll have to wait until we get the chance to refactor these post-processing methods.