Definition of datum
A datum reference or just datum (plural: datums ) is some important part of an object—such as a point, line, plane, hole, set of holes, or pair of surfaces—that serves as a reference in defining the geometry of the object and (often) in measuring aspects of the actual geometry to assess how closely they match with the nominal value, which may be an ideal, standard, average, or desired value. For example, on a car's wheel, the lug nut holes define a bolt circle that is a datum from wh… Webdatum-1 Any numerical or geometrical quantity or set of such quantities which may serve as a reference or base for other quantities.For statistical references, the plural form is …
Definition of datum
Did you know?
WebThe Latin word data is the plural of datum, " (thing) given", neuter past participle of dare, "to give". [6] The first English use of the word "data" is from the 1640s. The word "data" was first used to mean "transmissible and storable computer information" in 1946. The expression "data processing" was first used in 1954. WebThe datum is an important component of a coordinate. A coordinate with an unknown datum is an approximate location at best. The datum should be written with individual coordinates or included with explanatory notes when many coordinates are used.
WebApr 16, 2024 · These numbers are derived from datums — an essential part of any coordinate reference system and the backbone of so much of surveying. Datums are … WebAs a general definition, a datum is any quantity or set of quantities that may serve as a reference or basis for calculating other quantities. This broad characterization, in turn, leads to two related definitions of a …
Web• Note that the geoid is a vertical datum surface. d i o•A ge height is the ellipsoidal height from an ellipsoidal datum to a geoid. • Hence, geoid height models are directly tied to the geoid and ellipsoid that define them (i.e., geoid height models are not interchangeable). *Definition from the Geodetic Glossary, September 1986 WebA datum is a theoretical, ideal feature such as plane, line, or point, which does not actually exist: this makes it difficult to understand. Nevertheless, the understanding of datums is a necessity to understanding GD&T. This …
WebThe meaning of DATUM is something given or admitted especially as a basis for reasoning or inference. How to use datum in a sentence. Is data singular or plural?: Usage Guide ... Share the Definition of datum on Twitter Twitter. Kids Definition. datum. noun. da· tum ˈdāt-əm ˈdat- ˈdät-
WebJan 3, 2014 · The definition of a Datum from the Dimensioning and Tolerancing Standard ASME Y14.5-2009 is: A theoretically exact point, axis, line, plane, or combination thereof derived from the theoretical datum … churipo historiaWebA datum provides a frame of reference for measuring locations on the surface of the earth. It defines the origin and orientation of latitude and longitude lines. Learn more about spheroids and spheres. Whenever you change the datum, or more correctly, the geographic coordinate system, the coordinate values of your data will change. churipapearWebDefinition of Datum in the Definitions.net dictionary. Meaning of Datum. What does Datum mean? Information and translations of Datum in the most comprehensive dictionary … dfgothicp pro-5 w5Web2 days ago · Datum definition: a single piece of information; fact Meaning, pronunciation, translations and examples churiposWebDatum definition: A fact or proposition used to draw a conclusion or make a decision. dfgothic-eb-wing-rksj-hchurir alnaWebdatum definition: 1. a single piece of information 2. a single piece of information. Learn more. churipo michoacano