Loaded quaternion but still cannot find slerp

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Zhangxi Feng 2024-5-16

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https://ww2.mathworks.cn/matlabcentral/answers/2119341-loaded-quaternion-but-still-cannot-find-slerp

回答： Zhangxi Feng 2024-5-16

采纳的回答： Zhangxi Feng

After installing the Sensor Fusion toolbox, Matlab reopens. I used the following code:

q1 = quaternion([75,-20,-10],"eulerd","ZYZ","frame");

q2 = quaternion([-45,20,30],"eulerd","ZYZ","frame");

T = 0.5;

b = slerp(q1,q2,T);

But MATLAB returns error:

Unrecognized function or variable 'slerp'.

When I look it up, the only posts say quaternion must be loaded, and it is indeed loaded since I can see Quaternion objects for q1 and q2. Then, I also installed navigation toolbox, but the problem remains.

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Zhangxi Feng 2024-5-16

q1 = quaternion([75,-20,-10],"eulerd","ZYZ","frame")

q2 = quaternion([-45,20,30],"eulerd","ZYZ","frame")

T = 0.5;

b = slerp(q1,q2,T);

which -all quaternion

whos q1 q2

which -all slerp(q1,q2,T)

q1 = quaternion

size: 1 x 3

Error using horzcat

Dimensions of arrays being concatenated are not consistent.

Error in quaternion/display (line 5)

d = [q.a(:),q.b(:),q.c(:),q.d(:)];

Error in quaternion/display (line 17)

display(q,'onlyShowQuaternions')

I installed another aerospace toolbox since then, and now this is the error, I can't even create the quaternion anymore. But I think you are correct. I have the MTEX library and the quaternion was created from MTEX instead of from the MATLAB toolboxes. Is there a way to specify which toolbox to use, or do I have to disable MTEX when I need to do this?

Zhangxi Feng 2024-5-16