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* There is still the old Wiki page [[Old way of Space group determination]]
 
* There is still the old Wiki page [[Old way of Space group determination]]
 
* To prevent XDS from trying to find a better space group than the one with the lowest R<sub>meas</sub> (often P1), you could just use MAX_FAC_Rmeas= 1.0
 
* To prevent XDS from trying to find a better space group than the one with the lowest R<sub>meas</sub> (often P1), you could just use MAX_FAC_Rmeas= 1.0
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* Space group determination is not a trivial task. There is a number of difficulties that arise -
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** ambiguity of hand of screw axis (e.g. 3<sub>1</sub> versus 3<sub>2</sub>, or 6<sub>2</sub> versus 6<sub>4</sub>)
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** twinning may make a low-symmetry space group look like a high-symmetry one
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