wgs84Ellipsoid
Reference ellipsoid for World Geodetic System of 1984
Description
E = wgs84Ellipsoid
creates a referenceEllipsoid
object for the World Geodetic System of 1984 (WGS84)
reference ellipsoid. By default, the lengths of the semimajor axis and semiminor axis are in
meters.
E = wgs84Ellipsoid(
creates a WGS84
reference ellipsoid with the length unit specified by
lengthUnit
)lengthUnit
.
Examples
Create WGS84 Reference Ellipsoid
Create a WGS84 reference ellipsoid. By default, the semimajor and semiminor axes are in meters.
wgs84 = wgs84Ellipsoid
wgs84 = referenceEllipsoid with defining properties: Code: 7030 Name: 'WGS 84' LengthUnit: 'meter' SemimajorAxis: 6378137 SemiminorAxis: 6356752.31424518 InverseFlattening: 298.257223563 Eccentricity: 0.0818191908426215 and additional properties: Flattening ThirdFlattening MeanRadius SurfaceArea Volume
Display the surface area in square meters.
wgs84.SurfaceArea
ans = 5.1007e+14
Create WGS84 Reference Ellipsoid with Specified Units
Create a WGS84 reference ellipsoid with a length unit of kilometers.
wgs84km = wgs84Ellipsoid("kilometer")
wgs84km = referenceEllipsoid with defining properties: Code: 7030 Name: 'WGS 84' LengthUnit: 'kilometer' SemimajorAxis: 6378.137 SemiminorAxis: 6356.75231424518 InverseFlattening: 298.257223563 Eccentricity: 0.0818191908426215 and additional properties: Flattening ThirdFlattening MeanRadius SurfaceArea Volume
Display the surface area in square kilometers.
wgs84km.SurfaceArea
ans = 5.1007e+08
Input Arguments
lengthUnit
— Length unit of measure
'meter'
(default) | string scalar | character vector
Length unit of measure, specified as a string scalar or character vector. You can
specify any length unit accepted by the validateLengthUnit
function.
Value | Unit Name |
---|---|
"m" , "meter" ,
"meters" , "metre" ,
"metres" | Meters |
"cm" , "centimeter" ,
"centimeters" , "centimetre" ,
"centimetres" | Centimeters |
"mm" , "millimeter" ,
"millimeters" , "millimetre" ,
"millimetres" | Millimeters |
"micron" , "microns" | Microns |
"km" , "kilometer" ,
"kilometers" , "kilometre" ,
"kilometers" | Kilometers |
"nm" , "naut mi" , "nautical
mile" , "nautical miles" | Nautical miles |
"ft" , "international ft" ,
"foot" , "international foot" ,
"feet" , "international feet" | Feet |
"in" , "inch" ,
"inches" | Inches |
"yd" , "yds" , "yard" ,
"yards" | Yards |
"mi" , "mile" ,
"miles" , "international mile" ,
"international miles" | Miles |
"sf" , "survey ft" , "US survey
ft" , "U.S. survey ft" , "survey
foot" , "US survey foot" , "U.S. survey
foot" , "survey feet" , "US survey
feet" , "U.S. survey feet" | U.S. survey feet |
"sm" , "survey mile" , "survey
miles" , "statute mile" , "statute
miles" , "US survey mile" , "US survey
miles" , "U.S. survey mile(s)" , "U.S.
survey miles" | U.S. survey miles (statute miles) |
"Clarke's foot" , "Clarkes foot" | Clarke's feet |
"German legal metre" , "German legal
meter" | German legal metres |
"Indian foot" | Indian feet |
Data Types: char
| string
Extended Capabilities
C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.
Usage notes and limitations:
Setting the length unit of measure is not supported.
Version History
Introduced in R2012aR2021a: Generate C and C++ code using MATLAB Coder
The wgs84Ellipsoid
function supports code generation.
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