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tform2eul

Extract Euler angles from homogeneous transformation

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Syntax

eul = tform2eul(tform)
eul = tform2eul(tform, sequence)

Description

example

eul= tform2eul(tform)extracts the rotational component from a homogeneous transformation,tform, and returns it as Euler angles,eul. The translational components oftformare ignored. The input homogeneous transformation must be in the premultiply form for transformations. The default order for Euler angle rotations is"ZYX".

example

eul= tform2eul(tform,sequence)extracts the Euler angles,eul, from a homogeneous transformation,tform, using the specified rotation sequence,sequence. The default order for Euler angle rotations is"ZYX".

Examples

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Open Live Script 
tform = [1 0 0 0.5; 0 -1 0 5; 0 0 -1 -1.2; 0 0 0 1]; eulZYX = tform2eul(tform)
eulZYX =1×30 0 3.1416
Open Live Script 
tform = [1 0 0 0.5; 0 -1 0 5; 0 0 -1 -1.2; 0 0 0 1]; eulZYZ = tform2eul(tform,'ZYZ')
eulZYZ =1×30 -3.1416 3.1416

Input Arguments

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Homogeneous transformation, specified by a 4-by-4-by-nmatrix ofnhomogeneous transformations. The input homogeneous transformation must be in the premultiply form for transformations.

Example:[0 0 1 0; 0 1 0 0; -1 0 0 0; 0 0 0 1]

Axis rotation sequence for the Euler angles, specified as one of these string scalars:

  • "ZYX"(default) – The order of rotation angles isz-axis,y-axis,x-axis.

  • "ZYZ"– The order of rotation angles isz-axis,y-axis,z-axis.

  • "XYZ"– The order of rotation angles isx-axis,y-axis,z-axis.

Data Types:string|char

Output Arguments

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Euler rotation angles in radians, returned as ann-by-3 array of Euler rotation angles. Each row represents one Euler angle set.

Example:[0 0 1.5708]

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

版本sion History

Introduced in R2015a

See Also