嗨,胡安,我会尝试这个方法,谢谢or the detailed answer! Yes I'm aware of the possible inaccuracies and will discuss that in my thesis. I think it won't be such a big issue tho. The data I'm using is the noise level of streets and in the shown hole areas are mostly buildings, so the noise "moves" rather linear from the streets to the surrounding areas. Cheers Daniel
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