I think OpenStudio and I know DesignBuilder graphically display these as points. From memory, they are relative to the zone origin which is normally bottom left in plan view, which is itself alligned with the building geometry. The geometry remains constant, but the north-orientation can be changed.
This may be different depending on what options you selected. I would test it with a GUI.
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On 08.01.2015, at 21:06, "Fakeha Sehar fakeha_s@xxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx> wrote:
I am using relative co-ordinate system. I want to ask how to define the daylight reference point especially the x coordinate. The x coordinate of the wall remains same 49m. I want the daylight reference point's x coordinate 3m along the x axis. Should I define it 52m or 3m or 46m?
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