Determining elevation values in a geocoding system
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United States of America Patent
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Apr 28, 2009
Grant Date -
Jul 3, 2008
app pub date -
Dec 28, 2006
filing date -
Dec 28, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method of determining elevation values includes inputting a location into a geocoding system having a segment data set and determining the closest segment in the data set to the location. A data set of elevation data the closest segment is accessed and a determination is made of an elevation value for each of two elevation points associated with the closest segment. The elevation value of the location is determined based on interpolation of the location in relation to each the two elevation points and the elevation value of each of the two elevation points. The determined elevation value for said input location is output. The offset distance of the location from the closest segment may be determined and a slope applied to the offset distance to determine an elevation gain or loss for the location due to the offset distance of the location from the closest segment.
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