I guess you are using version 5.5. In that version in the beginning
the program finds all possible twin operators and assigns twin
fraction for each of them. Then it tries to filter out smaller twin
domains and takes only "significant" domains. I.e. when twin fractions
are higher than 0.05 by default.
The number of twin domains should be equal to the number of twin
fractions. Each twin domain has its own twin fraction.
regards
Garib
On 14 Jun 2010, at 14:58, Paul Lindblom wrote:
Hi everybody,
can anybody tell me the difference between "twin domain" and "twin
fraction". Refmac just told me that my data have 12 twin domains
((pseudo)merohedral: one time: 0.113 and eleven times 0.081), but
only 2 twin fractions ( 0.8924 and 0.1076).
best regards,
Paul