datum plane - определение. Что такое datum plane
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Что (кто) такое datum plane - определение

POINT OF REFERENCE AGAINST WHICH SOME OTHERS ARE CALCULATED
Datum references; Engineering datum
  • GD&T]] datum reference symbols.

Vertical datum         
REFERENCE SURFACE FOR VERTICAL POSITIONS
Zero-elevation surface; Mean gravity surface; Reference height; Vertical reference system; Height datum; Zero-level elevation; Height system
In geodesy, surveying, hydrography and navigation, vertical datum or altimetric datum, is a reference coordinate surface used for vertical positions, such as the elevations of Earth-bound features (terrain, bathymetry, water level, and built structures) and altitudes of satellite orbits and in aviation.
Supplementary Ideographic Plane         
  • A map of the Supplementary Ideographic Plane. Each numbered box represents 256 code points.
  • A map of the Supplementary Special-purpose Plane. Each numbered box represents 256 code points.
  • A map of the Tertiary Ideographic Plane. Each numbered box represents 256 code points.
  • A map of the Supplementary Multilingual Plane. Each numbered box represents 256 code points.
CONTINUOUS GROUP OF 65536 CODE POINTS IN THE UNICODE CODED CHARACTER SET
Basic multilingual plane; Basic Multilingual Plane; Supplementary Multilingual Plane; Plane One; Plane Zero; Plane Fifteen; Plane Sixteen; Supplementary Ideographic Plane; Plane Two; Supplementary Special-purpose Plane; Plane Fourteen; Plane 0; Plane 1; Plane 2; Plane 14; Plane 15; Plane 16; Astral character; Mapping of Unicode character planes; Unicode plane; Supplementary characters; Unicode planes; Tertiary Ideographic Plane; Private Use Plane; Astral plane (Unicode); Plane 15 (Unicode); Plane 16 (Unicode); Private use plane; Private use plane (Unicode); UCS-PUP15; PUP15; PUP16; UCS-PUP16; PUP15 (Unicode); PUP16 (Unicode); Supplementary plane; Unicode BMP; Private Use Planes; Plane 4; Plane 5; Plane 6; Plane 7; Plane 8; Plane 9; Plane 10; Plane 11; Plane 12; Plane 13; Supplemental Multilingual Plane; Supplemental Ideographic Plane; Supplemental Special-purpose Plane; Plane (unicode)
<text, standard> (SIP) The third plane (plane 2) defined in Unicode/ISO 10646, designed to hold all the ideographs descended from Chinese writing (mainly found in Vietnamese, Korean, Japanese and Chinese) that aren't found in the {Basic Multilingual Plane}. The BMP was supposed to hold all ideographs in modern use; unfortunately, many Chinese dialects (like Cantonese and Hong Kong Chinese) were overlooked; to write these, characters from the SIP are necessary. This is one reason even non-academic software must support characters outside the BMP. Unicode home (http://unicode.org). (2002-06-19)
Plane (geometry)         
  • right
FLAT, TWO-DIMENSIONAL SURFACE
Infinite Plane; Infinite plane; Plane coordinates; Plane coordinate; 2-dimensional space; Euclidean 2-space; Euclidean two-dimensional space; Two-dimensional Euclidean space; Plane (geometry)
In mathematics, a plane is a flat, two-dimensional surface that extends indefinitely.In Euclidean geometry it extends infinitely, but in, e.

Википедия

Datum reference

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 which the location of the rim can be defined and measured. This matters because the hub and rim need to be concentric to within close limits (or else the wheel will not roll smoothly). The concept of datums is used in many fields, including carpentry, metalworking, needlework, geometric dimensioning and tolerancing (GD&T), aviation, surveying, geodesy (geodetic datums), and others.