ISO TC 211 Geographic information/Geomatics Committee site

ISO/TC 211 Geolexica

Concept flattening”

Term ID

2108

source

ISO 19111:2019, (E), 3.1.28

eng

flattening

f

ratio of the difference between the semi-major axis (a) and semi-minor axis (b) of an ellipsoid to the semi-major axis; f = (a – b)/a

Note to entry: Sometimes inverse flattening 1/f = a/(a-b) is given instead; 1/f is also known as reciprocal flattening.

ORIGIN: ISO/TC 211 Glossary of Terms - English (last updated: 2020-06-02)

spa

achatamiento

f

razón de la diferencia entre el semieje mayor (a) y el semieje menor (b) de un elipsoide con el semieje mayor; f = (a - b) / a

Nota: a veces en su lugar se da la inversa del achatamiento 1/f = a/(a-b); 1/f también se conoce como el recíproco del achatamiento.

ORIGIN: Glosario de terminos de ISO/TC211 (last updated: 2020-06-02)

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info

  • status: valid
  • classification: preferred
  • date accepted: 2015-08-15

Review

last review performed:
(2019-01-31)
status:
final
decision:
accepted
decision event:
Publication of ISO 19111:2019(E)
notes:
Authoritative reference changed from ISO 19111:2007, 4.22, modified – The first occurrence of the words “semi-major” have been expanded to “semi-major axis”. to ISO 19111:2019(E), 3.1.28. Lineage source added as ISO 19162:2015