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matlabtoolboxdegreesradians

degtorad vs deg2rad in MATLAB?

Is there a difference between degtorad and deg2rad in MATLAB? Is there a benefit of one over the other, like speed (or some other metric I didn't think of)?

http://www.mathworks.com/help/map/ref/degtorad.html http://www.mathworks.com/help/map/ref/deg2rad.html

Solution

  • Thank-you excaza for telling me how to view the source code for both functions.
    Thank-you hbaderts for telling me to check licenses in use.

    Here is what I've found.

    They are functionally identical. Here are the only differences I could find:
    1. The bolded line below that states that deg2rad has been replaced by degtorad.
    2. They use different licenses. deg2rad requires the map_toolbox, while degtorad does not.

    degtorad.m

    function angleInRadians = degtorad(angleInDegrees)
    % DEGTORAD Convert angles from degrees to radians
    %
    % angleInRadians = DEGTORAD(angleInDegrees) converts angle units from degrees to radians.
    %
    % Example
    % -------
    % Compute the tangent of a 45-degree angle
    % tan(degtorad(45))
    %
    % See also: fromDegrees, fromRadians, toDegrees, toRadians, radtodeg.

    % Copyright 2009 The MathWorks, Inc.

    angleInRadians = (pi/180) * angleInDegrees;

    deg2rad.m

    function angleInRadians = deg2rad(angleInDegrees)
    % DEG2RAD Convert angles from degrees to radians
    %
    % DEG2RAD has been replaced by DEGTORAD.
    %
    % angleInRadians = DEG2RAD(angleInDegrees) converts angle units from degrees to radians.

    % Copyright 2007-2009 The MathWorks, Inc.

    angleInRadians = (pi/180) * angleInDegrees;

    License Difference:

    degtorad(180)
    ans =
    3.1416
    license('inuse')
    matlab

    deg2rad(180)
    ans =
    3.1416
    license('inuse')
    map_toolbox
    matlab