Calculate the portion of the area the shadow is occupying


I am trying to calculate what portion of the area the shadow being cast in the simulation is occupying of the total area of the test surface. I don’t think the shadow is isolated in the result mesh (from the sun simulation) that’s why I am not getting an accurate number?

Shadow area (69.7 KB)

This is how you do it with native Grasshopper components:

Shadow area (52.0 KB)

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Thanks for the reply. Although, how is the shaded portion greater than the entire area of the testing surface?

You had two legend parameters so the study was running twice:

Just remove the legend parameters and the resulting area won’t be multiplied by 2.

Got it! Thanks heaps!