Occupant's view to the outdoors - ladybug component

#1

Hello,

I try to determine the view to outdoor for four occupants in an office room. I assume that all the occupants look under 45 degree to the façade. I want to quantify the view to the outdoor with the “view to outdoor”- component in ladybug, but I don’t understand the results.
I have an office room with four occupants and vertical blinds as shading system. The room contains one big window in the south façade.
The vertical blinds have four possible states and I would to determine the view for each occupants and for each possible state. The squares in the image below represent the occupants.

4_occupants_45_degree_view

I first determined the view for the occupants without shading system. But the view for the occupants 1 and 2 (see image below) is very different, but I would expect a more equal view.

Floorplan_vectors

Could anyone explain the “view to outdoor”-component and maybe give me advice how I can use this component to achieve my goal (correctly quantify the view for each of the four occupants and for different shading states)

Vertical_blinds_view_factor.gh (539.1 KB)

Kind regards,
Kim Bodde

#2

Did you already check this?

#3

Thank you for the information. I saw the example:

http://hydrashare.github.io/hydra/viewer?owner=chriswmackey&fork=hydra_2&id=View_to_the_Outdoors_Through_a_Facade&slide=0&scale=1&offset=-2.6233078928923987,-0.13489233540457235

In the description of this example, they speak about the level of performance:
" For this file, a quality view is definied as an area with a view factor angle of 20 degrees or greater (or 2% of this full 360 field of view). This definition is taken from the View Factor Classification 4 presented in this research paper"

image

I have some questions and I hope that the answers makes makes the method more clear for me:

  • What does a 2% level of performance mean? 2% of 360 isn’t to 20 degrees? Doesn’t the level of performance has to be minimal 5.55% to have a view angle of minimal 20 degrees? But why did they use 2%?
  • Could you explain to me what the output ‘Area with a quality view’ means?

Thank you in advance!

Kind regards,

Kim