Line diagram

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Line diagram (for values ​​that vary)
Line diagram
(with a regularity)

A line diagram (also called a curve diagram) is the graphic representation of the functional relationship between two (with 2D representation) or three (with 3D representation) features in line form. In contrast to the scatter diagram , there can only be one value pair or value trio.

The same measuring points with two different compensation lines

If enough measuring points are collected during a measurement , the points can be connected with a line. In the case of strongly scattering points, stretching will be used for this; If the regularity is recognizable, a steadily curved, compensating representation in physics and technology is the better choice. This form can enable conclusions to be drawn about a suitable function for the mathematical description of the regularity. Depending on the background knowledge (expectation of the course) or personal assessment (individual measurement points as outliers), the line can turn out differently.

Conversely, points can be calculated from a known formula and the mathematical relationship can be illustrated by means of a continuous line. This representation is also called a function graph .

There are stipulations in DIN 461 for the uniform, unambiguous and clear graphic representation of functional relationships in science and technology .

Mostly the Cartesian coordinate system is used, but curvilinear coordinate systems are also used, e.g. B. Speedometer disc on trucks or horizontal antenna diagram .

See also

Web links

Commons : Line Chart  - collection of images, videos and audio files
Wiktionary: line diagram  - explanations of meanings, word origins, synonyms, translations