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solving Matrix index problem

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Mouhcine Jaouhari
Mouhcine Jaouhari 2020-7-28
关闭： MATLAB Answer Bot 2021-8-20
Hi everybody, I use the robotics toolbox for matlab, I m confused , the matrix of forward kinematics is a 4*4 matrix but in the indexition is an 1*1 matrix? any help
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John D'Errico
John D'Errico 2020-7-28
Lacking the indicated toolbox, so I cannot say for certain, but...
While T is returned as what appears to be a 4x4 array, we see size(T) tells us it is 1x1. That suggests T is really an object. Therefore, you need to try this:
whos T
If so, then of course floor(T(1,4)) would produce an error, since T is a 1 by 1 object. Again, size tells us that.
You need to verify what T is. Then do some reading in the help to understand how to use these tools.

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