No both settings are equally valid, it's just telling you that it has re-indexed to the conventional monoclinic cell with beta nearest to 90 (and >= 90). I believe there's an option in pointless if you really want to keep the non-conventional cell with beta > 120.
-- Ian On Mon, Jan 10, 2011 at 1:29 PM, Debajyoti Dutta < debajyoti_dutt...@rediffmail.com> wrote: > > Hi all, > > I have been processing data using XDS which results in the cell constants > 179.1 55.21 149.5 90 124.3 90. and the space group is C2. > Checking systematic absences have shown that the screw axis is not present. > Again I was checking the space group using POINTLESS. It was returning the > following waning. > > $TEXT:Warning:$$ $$ > WARNING: > Input and output crystal systems are different but equivalent centred > monoclinic systems. > > The input crystal system is C-centred monoclinic > (Cell: 179.1 55.21 149.5 90 124.3 90) > The crystal system chosen for output is body-centred monoclinic > (Cell: 149.5 55.21 155.7 90 108.1 90) > > Do I have to reprocess the data using the chosen cell length. > > Please help me out of this situation. > > Sincerely > Debajyoti > > > > <http://sigads.rediff.com/RealMedia/ads/click_nx.ads/www.rediffmail.com/signatureline....@middle?>
