Hey!

I need some explanations to understand the definition of the Camera Height in SkyHelios.

I have a XYZ-Raster-File where the z-values are defined as the following:

Z=elevation + building height

lowest z-values: ~ 65m (elevation=65m above mean sea level, building height = 0m (no building))
heighest z-values: ~ 120m (elevation 95 m a.m.s.l. + building height=25m)

when I define the camera height as 1.5 m and choose a point very close to a building, the picture of the SVF in the panel at the right side looks not reasonable (there is no black area in the direction of the building)

when I lower the camera height by 10 m (Camera height=-8.5m) I see the shape of the building in the sky view factor picture as I would expect

As I understand, the camera height adds a defined height to the ground level in the simulation area. Therefore a value of 0m should add no height to the input heights of the XYZ-file. But if this is true then I should be able to see the shape of the building in the SVF-picture when I choose a point close to it, and the SVF-picture should turn completly black as soon as I define negavtive camera heights. Both is not the case in my example.

I need to know which value I have to set for the camera height to simulate heights above 0.0 m and 1.5 m above my input XYZ-file.

Thanks a lot!

Dear Dominik,

Thank you for your quick answer. So far I could not solve the problem. All I can say for now is that the problem doesn't appear when I use OBS-Files instead of the XYZ-Files. Maybe I will come back to you later.

Best Regards,
Regina