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29 Oct 2013 quaternion.m quaternion class, vectorized, converts among rotation representations, numerical Euler propagation Author: Mark Tincknell

This is great stuff. Concise and functional. However, I have a problem with function 'unitvector'. It is used in several places in the code but it is nowhere to be seen. Here's an example error message when trying to use 'OmegaAxis':

1492 [axis, omega] = unitvector( omegav, 1 );
Undefined function 'unitvector' for input arguments of type 'double'.

Error in quaternion/OmegaAxis (line 1492)
[axis, omega] = unitvector( omegav, 1 );

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