Hi Joseph,
I’ve double checked with the newly released radiation rose (Calla Dome: Invalid mesh Output & LBT Version? - #4 by chris).
Basically, this compoent is doing the same thing as my initial script, that is: computing solar irradiance on a surface for all azimuth and inclination angles. The difference is that in the rose component results are “rolled up” 360° wide.
As you can see, results look very similar to my first version, in terms of azimuth, min and max values.
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As you pointed out, the DOE file is much older. It can explains the difference in magnitude comparing with the 4 others, which are all reconstructed from satellite based data. These last 4 epw exhibit the same “pattern” so it sounds consistent to me.
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But still, why such an “azimuth” offset ? Can the underlying problem be a shift in date time, like some weird timezone interpretation ? Do you have any explanation ? Note also that OneBuiding is shifted the opposite way comparing to Oikolab.
Maybe @chris or @Lukas might be able to share their thoughts on that ?
