Ok StructMeasure without the 'chimera.'  is there but now I  can't find the function to generate the numpy array of atoms. I get the following errors:

NameError: name 'numpyArrayForAtoms' is not defined

or

AttributeError: 'module' object has no attribute 'numpyArrayForAtoms'

if I use:

>> xyzs = chimera.numpyArrayForAtoms(atoms)

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