Definition of Datum line. Meaning of Datum line. Synonyms of Datum line

Here you will find one or more explanations in English for the word Datum line. Also in the bottom left of the page several parts of wikipedia pages related to the word Datum line and, of course, Datum line synonyms and on the right images related to the word Datum line.

Definition of Datum line

Datum line
Datum Da"tum, n.; pl. Data. [L. See 2d Date.] 1. Something given or admitted; a fact or principle granted; that upon which an inference or an argument is based; -- used chiefly in the plural. Any writer, therefore, who . . . furnishes us with data sufficient to determine the time in which he wrote. --Priestley. 2. pl. (Math.) The quantities or relations which are assumed to be given in any problem. Datum line (Surv.), the horizontal or base line, from which the heights of points are reckoned or measured, as in the plan of a railway, etc.

Meaning of Datum line from wikipedia

- The North American Datum (NAD) is the datum now used to define the geodetic network in North America. A datum is a formal description of the shape of the...
- A geodetic datum or geodetic system (also: geodetic reference datum or geodetic reference system) is a coordinate system, and a set of reference points...
- A datum reference or just datum is some important part of an object—such as a point, line, plane, hole, set of holes, or pair of surfaces—that serves...
- the ****ociated World Magnetic Model (WMM), and a current list of local datum transformations. The latest revision is WGS 84 (also known as WGS 1984,...
- against a local datum may not be the same as one obtained from a GPS receiver. Converting coordinates from one datum to another requires a datum transformation...
- vertical reference line, or plumb-line. It is a precursor to the spirit level and used to establish a vertical or horizontal datum. The instrument has...
- Data (singular datum) are individual units of information. A datum describes a single quality or quantity of some object or phenomenon. In analytical...
- and is, therefore, perpendicular to the geoid. The angle between the plumb line which is perpendicular to the geoid (sometimes called "the vertical") and...
- northerly latitude.) The smallest datum shift is on the west coast of Scotland and the greatest in Kent. These two datums are not both in general use in...
- mathematical model used as foundation by Spatial reference system or Geodetic datum definitions. In 1687 Isaac Newton published the Principia in which he included...
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