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Are addresses interpolated or referenced exactly to rooftop?

April 26, 2017addresses interpolated referenced Rooftop

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Are addresses interpolated or referenced exactly to rooftop?

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If a geocoded address contains the value ADD in the field OUT_GEOAccuracy, it is an interpolated house number. This means, the exact coordinates for the address are not contained in the reference database. Instead, the position of a street and the range of house numbers of this street are known. Then, the address is interpolated and offset to the proper side of the street. http://www.addressdoctor.com/en/support/faq?

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If a geocoded address enrichment is returned, it is accompanied by a EGC status value. EGC 8 stands for an interpolated house number coordinate. This means, the exact coordinates for the address are not contained in the reference database. Instead, the position of a street and the range of house numbers of this street are known. Then, the address is interpolated and offset to the proper side of the street.