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Aug
5
comment Calculation of rotation matrix given two vectors breaks when inverting matrix
@Muphrid My mistake, sorry. So the non-invertibility is due to A not being uniquely defined? If this is the case surely you cannot then use least-squares fitting and the Wolfram page is wrong?
Aug
5
comment Calculation of rotation matrix given two vectors breaks when inverting matrix
@Muphrid I do not need to do the least squares fit only find A. I am not using one vector, I have $x'$ the rotated vector, and $x$ the original. The rotation matrix is composed of 3 angles so in theory we have enough information, but perhaps not to specify just A?
Aug
5
comment Calculation of rotation matrix given two vectors breaks when inverting matrix
@Muphrid I don't think that is the case, they simply say "Writing the arrays of vectors as matrices gives" by which I thought they meant they simply considered them as 3x1 matrices? Anthony: I am not sure, perhaps I am confused as to the meaning of $\boldsymbol{x}$ but I don't think it is diagonal. I'm happy to be told I am wrong.
Aug
5
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Aug
5
revised Calculation of rotation matrix given two vectors breaks when inverting matrix
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Aug
5
asked Calculation of rotation matrix given two vectors breaks when inverting matrix
Jul
22
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Jul
22
comment Ideas about a transformation matrix
Fantastic thanks for that
Jul
22
accepted Ideas about a transformation matrix
Jul
22
asked Ideas about a transformation matrix