Dear Petr
Both questions, on twin law and R-factors, are mainly questions about
definitions and standards.
From Online Dictionary of Crystallography: "The twin law is the SET of twin
operations mapping two individuals of a twin."
In your P 21 21 21 example with a=b, the set contains four oper
tr Kolenko
> Cc: CCP4BB@jiscmail.ac.uk
> Subject: Re: [ccp4bb] Twin law definition in REFMAC5
>
> Is that twin law possible? Presumably the cell lengths for b and c are
> close but you are swapping a 2fold axis along c for a 21 axis along b?
> Eleanor
>
> On Tue, 7 Jul 2020
u for your response,
Petr
From: Eleanor Dodson
Sent: Tuesday, July 7, 2020 7:08:44 AM
To: Petr Kolenko
Cc: CCP4BB@jiscmail.ac.uk
Subject: Re: [ccp4bb] Twin law definition in REFMAC5
Is that twin law possible? Presumably the cell lengths for b and c are clos
Is that twin law possible? Presumably the cell lengths for b and c are
close but you are swapping a 2fold axis along c for a 21 axis along b?
Eleanor
On Tue, 7 Jul 2020 at 05:36, Petr Kolenko wrote:
> Dear colleagues,
> I have a crystal with space group P21212 and merohedral twinning according
>
Dear colleagues,
I have a crystal with space group P21212 and merohedral twinning according to
"-h, l, k" twin law. If I click "twin" in the interface, REFMAC5 recognizes a
different twin law and does not refine the structure properly. Is there a way
to tell REFMAC5 the proper twin law? I tried
