NAD27North American Datum of 1927 (mapping)
Copyright 1988-2018, All rights reserved.
References in periodicals archive ?
What is the approximate difference in linear distance between WGS84 and NAD27? Use ArcView and compare two maps of the same field boundary but in two different datums.
The coordinates you get are based on a particular geodetic datum, such as the World Geodetic System 1984 (WGS84) or North American Datum 1927 (NAD27).
The data files were geo-referenced to the Universal Transverse Mercator (UTM) Zone 11 projection coordinate system according to NAD27. The 1:24,000 digital elevation models data files, derived from standard U.S.
These images are at a scale of 1:24,000, datum of NAD27, UTM Zone 15, with the latest available editions used.
We converted latitude-longitude locations (NAD83 datum) to the UTM coordinate system (NAD27 datum) with ArcInfo (v.
Our mapping system was created in NAD27 State Plane Coordinates, which forced conversion of nearly all mapping work received from outside our agency."'
Many of the differences between what are referred to as NAD27 and NAD 83 have to do with converting measurements based on the Clarke 1866 ellipsoid to new ones based on the GRS1980 ellipsoid.
This is the result of differences in datum, that is, NAD27 (North American Datum 1927) versus WGS84 (World Geodetic System 1984).
Data at crossing sites were georeferenced with a handheld Garmin II Global Positioning System (GPS) (UTM, NAD27, [+ or -] 50-100 m).