oq-gem

Glossary for gem taxonomy

Use this attribute if the building does not have a façade that is parallel to a street. Choose any other façade and define Direction X parallel to it. Direction Y will  be perpendicular (orthogonal) to Direction X. This includes buildings that are not located next to a street or their orientation is not parallel to the street. It also applies to any building where information about its direction is unavailable

Direction_3

Unspecified Direction - when street cannot be identified

Direction_4

Unspecified Direction - case of a building with a curved plan shape

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