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Lengths and Angles

Convert between different angle and length units and perform longitude wrapping; convert units of distances along the surface of the Earth

On a perfect sphere, the distance between points on the surface of the sphere can be represented by angles. For spherical models of the Earth, Moon, and other planetary bodies, Mapping Toolbox™ allows spherical distance conversion between common units of angles and length.

Functions

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Convert Degrees and Radians

deg2radConvert angle from degrees to radians
rad2degConvert angle from radians to degrees

Convert Notations

degrees2dm Convert degrees to degrees-minutes
degrees2dms Convert degrees to degrees-minutes-seconds
dm2degrees Convert degrees-minutes to degrees
dms2degrees Convert degrees-minutes-seconds to degrees

Convert Degrees and Radians at Run-Time

toDegreesConvert angles to degrees
toRadiansConvert angles to radians
fromDegreesConvert angles from degrees
fromRadiansConvert angles from radians
wrapTo180Wrap angle in degrees to [-180 180]
wrapTo360Wrap angle in degrees to [0 360]
wrapToPiWrap angle in radians to [−pi pi]
wrapTo2PiWrap angle in radians to [0 2*pi]
unwrapMultipartUnwrap angles with parts separated by NaN values
km2nmConvert kilometers to nautical miles
km2smConvert kilometers to statute miles
nm2kmConvert nautical miles to kilometers
nm2smConvert nautical to statute miles
sm2kmConvert statute miles to kilometers
sm2nmConvert statute to nautical miles
deg2kmConvert spherical distance from degrees to kilometers
deg2nmConvert spherical distance from degrees to nautical miles
deg2smConvert spherical distance from degrees to statute miles
km2degConvert spherical distance from kilometers to degrees
km2radConvert spherical distance from kilometers to radians
nm2degConvert spherical distance from nautical miles to degrees
nm2radConvert spherical distance from nautical miles to radians
rad2kmConvert spherical distance from radians to kilometers
rad2nmConvert spherical distance from radians to nautical miles
rad2smConvert spherical distance from radians to statute miles
sm2degConvert spherical distance from statute miles to degrees
sm2radConvert spherical distance from statute miles to radians
str2angleConvert strings to angles in degrees
angl2strConvert angles to character array
map.geodesy.isDegree True if input matches 'degree' and false if 'radian'
validateLengthUnitValidate and standardize length unit
unitsratioConversion factor between units

Topics

Angles

Lengths

  • Length and Distance Units
    Linear measurements of arc lengths and distances on spheroids use the same units as on the plane, such as feet, meters, miles, and kilometers.

Spherical Distance

  • Distances on the Sphere
    You can represent distances on the sphere using angles or linear arc lengths.
  • Relationship Between Points on Sphere
    There are many ways to define the 2-D spatial relationship between two points on a perfect sphere, including azimuth, heading, spherical distance, linear distance, and range.