This is standard gotcha number 17, you are picking up ncsmask from XtalView
rather
than the CCP4 one, see
http://www.ccp4.ac.uk/problems/general-probs.php#general_wrong_prog
Basically, you need to fix the path in some way so that the CCP4 one comes
first.
check with which -a ncsmask
HTH
Hi Hiaolei,
I believe you have C2 with pseudo translation and that screws up the
merohedral twinning test. As you also write you know the translation
vector already. Most likely your crystal truly is in a higher symmetry,
but for example during freezing (and the high solvent content) your
Basically, you need to fix the path in some way so that the CCP4 one comes
first.
^^^
The ccp4 setup file contains a variable 'ccp4_first_in_path' which you can
set to one to ensure ccp4 is 'first in path'. You also need to make sure
that this
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