LBT 1.4 taking longer than legacy versions to run incident radiation, radiation rose

[MeghaSajeev]

Hi
I switched to LBT 1.4 recently and it is taking longer to get the basic climatic charts and radiation analysis. Is it because I’m using Rhino 6?

[chris]

@MeghaSajeev

it is taking longer to get the basic climatic charts and radiation analysis. Is it because I’m using Rhino 6?

No. See here for the explanation:

Difference Between "LB Incident Radiation" and "Ladybug Solar Radiation" Components

Good question and this is directly linked to what I said here: In LBT, we do the ray tracing for a full sphere around each point so that we can account for the radiation that’s “reflected” off the ground (technically, we’re doing this by assuming an emissive ground hemisphere that has 0.2 the intensity of the sky hemisphere, much in the same way Radiance does). In legacy, we only looked at the radiation coming from the sky dome, which was ok for some purposes but could be 20% less than expect…