earthRadius

Mean radius of planet Earth

Syntax

R = earthRadius

R = earthRadius(lengthUnit)

Description

R = earthRadius returns the scalar value 6,371,000, the mean radius of the Earth in meters.

R = earthRadius(lengthUnit) returns the mean radius of the Earth using the length unit specified by lengthUnit.

Examples

Earth Radius in Meters

View the mean radius of the Earth using the default units, meters.

earthRadius

ans = 
6371000

Earth Radius in Specified Units

View the mean radius of the Earth, specifying the units as kilometers.

earthRadius("km")

ans = 
6371

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

Version History

Introduced in R2010b