Could it be that NCSMASK folded the mask back into an asymmetric unit?
My NCSMASK input file contains explicit xyzlim boundaries and "notrim"
keyword.
On Tue, 18 Mar 2008, Laurence Pearl wrote:
I'm trying to generate a mask around a molecule using NCSMASK under the CCP4i
interface, for ultimate use in NCS averaging and density modification in dm.
Being a little old-fashioned I wanted to check that it covered the required
molecule. However when displayed in COOT, there seem to be arbitary flat
slabs running through the mask, with some sort of inversion or other
transformation on the other side of the slab. The mask has a similar
appearance in the CCP4mg. The flattenings are parallel to cell edges, and
sometimes, but not always adjacent to cell faces.
Is this a known problem ? is it NCSMASK ? or is it COOT and CCP4mg ?
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