Geodesy`
Geodesy`

SpheroidalDistance

As of Version 7.0, SpheroidalDistance has been superseded by GeoDistance.

SpheroidalDistance[pt1,pt2]

gives the distance between points pt1 and pt2 on Earth using the spheroidal model of the planet.

Details and Options

  • To use SpheroidalDistance, you first need to load the Geodesy Package using Needs["Geodesy`"].
  • A point pti is expressed as a pair of numbers {latitude,longitude}.
  • Each coordinate latitude and longitude can be given in degrees, or as {degrees,minutes}, or {degrees,minutes,seconds}.
  • A negative value for a coordinate indicates that the coordinate is South latitude or West longitude.
  • Distances are returned in kilometers.
  • Note that the model is an approximation formula that only employs machine-precision computation. It is fairly accurate to distances of up to 10000 kilometers on the standard model of Earth.
  • The following options can be given:
  • SemimajorAxis6378.14specify the length of the semimajor axis
    Eccentricity0.081819specify the value of the eccentricity
  • With the setting SemimajorAxis->length the length of the semimajor axis in the spheroidal model is assumed to be length kilometers.
  • With the setting Eccentricity->v the eccentricity in the spheroidal model is assumed to be v.
Wolfram Research (2008), SpheroidalDistance, Wolfram Language function, https://reference.wolfram.com/language/Geodesy/ref/SpheroidalDistance.html.

Text

Wolfram Research (2008), SpheroidalDistance, Wolfram Language function, https://reference.wolfram.com/language/Geodesy/ref/SpheroidalDistance.html.

CMS

Wolfram Language. 2008. "SpheroidalDistance." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/Geodesy/ref/SpheroidalDistance.html.

APA

Wolfram Language. (2008). SpheroidalDistance. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/Geodesy/ref/SpheroidalDistance.html

BibTeX

@misc{reference.wolfram_2023_spheroidaldistance, author="Wolfram Research", title="{SpheroidalDistance}", year="2008", howpublished="\url{https://reference.wolfram.com/language/Geodesy/ref/SpheroidalDistance.html}", note=[Accessed: 28-February-2024 ]}

BibLaTeX

@online{reference.wolfram_2023_spheroidaldistance, organization={Wolfram Research}, title={SpheroidalDistance}, year={2008}, url={https://reference.wolfram.com/language/Geodesy/ref/SpheroidalDistance.html}, note=[Accessed: 28-February-2024 ]}