quaternion does not work in matlab

I am trying to use rotatepoint and quaternion. when I want to do matlab's example. an error ocurres.

the example is here:

https://www.mathworks.com/help/driving/ref/quaternion.rotatepoint.html#d126e208535

x = 0.5;
y = 0.5;
z = 0;
plot(x,y,"ko")
hold on
axis([-1 1 -1 1])

quat = quaternion([0,0,pi/4; 0,0,-pi/2],"euler","XYZ","point");       
rotatedPoint = rotatepoint(quat,[x,y,z])

rotatedPoint = 2×3

-0.0000 0.7071 0 0.5000 -0.5000 0

-------------------------------------------------------------------

this is the error i get:(when using quaternion)

Index exceeds the number of array elements. Index must not exceed 1.

Error in matlabshared.rotations.internal.quaternionBase>partsFromEuler (line 256)

r3 = [arg3(3) arg3(2) arg3(1)];

Error in matlabshared.rotations.internal.quaternionBase>partsFromConversion (line 182)

[qa,qb,qc,qd] = partsFromEuler(arg1,arg2,arg3,arg4);

Error in matlabshared.rotations.internal.quaternionBase (line 59)

[obj.a,obj.b,obj.c,obj.d] = partsFromConversion(varargin{:});

Error in quaternion (line 109)

[e-mail](varargin{:});

[Walter Roberson]

The code works online here.

Which MATLAB release are you using?

[Reza Zh]

yes, it works online.

I am using R2022a.

Is it because i am missing some packges?

[Dyuman Joshi]

It could be. Using quaternion() and rotatepoint() requires toolboxes.

MATLAB Online says that one of the following is required for both -

Automated Driving Toolbox

Sensor Fusion and Tracking Toolbox

Navigation Toolbox

Radar Toolbox

Robotics System Toolbox

ROS Toolbox

UAV Toolbox

Computer Vision Toolbox

Check if you have any of the following toolboxes installed by typing "ver" in the command window.

[Reza Zh]

All toolbox mentioned here are installed on my MATLAB 2022a ii

Answer 1

[Walter Roberson]

As an experiment try

quat = quaternion([0,0,pi/4; 0,0,-pi/2],'euler','XYZ','point');       

The R2022a documentation https://www.mathworks.com/help/releases/R2022a/driving/ref/quaternion.html?s_tid=doc_ta shows only using character vectors in those positions, not string objects, so it just might be the case that R2022a does not recognize string objects there.

[Reza Zh]

@Walter Roberson

it worked by using 'euler','XYZ','point' instead of "euler","XYZ","point"

thank you