Edward A. Berry wrote:
I'm not familiar with this output (XDS?) but I would guess Rw-lin
(not Rw-pim or rim, although those are theoretically more useful)
is the R-factor to use for Rsym
No- the Rw values are weigted averages. Not fair to cite as Rsym.
Sorry for the unhelpful and misleading post
: Thursday, January 21, 2010 6:12 PM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] R-sym and R-merge
I doubt there ever was a universal convention. When I was young,
Rsym was calculated from the symmetry related reflections on a
single film. With precession photography there could be a lot of
them
I'm not familiar with this output (XDS?) but I would guess Rw-lin
(not Rw-pim or rim, although those are theoretically more useful)
is the R-factor to use for Rsym (or Rmerge if you are merging datasets
previously reduced from multiple crystals).
I think "observed" means, out of all the spots that
I doubt there ever was a universal convention. When I was young,
Rsym was calculated from the symmetry related reflections on a
single film. With precession photography there could be a lot of
them, but even the oscillation films often had many mates because
the crystal was aligned with a symm
For what it's worth, I've been told that Rmerge was used originally, in
the pre-cryo few images per crystal age, to indicate the R-factor for
merging data collected from multiple crystals. Isym is calculated
identical but refers to data collected from a single crystal.
To be honest I'm not sur
I've never been able to discover any difference between Rsym & Rmerge
Phil
On 21 Jan 2010, at 18:34, james09 pruza wrote:
> Dear All CCP4bbers,
>
> Please help me in finding *R-sym I *(observed), *R-merge I*(obseved), *R-Free
> Error i*n the data provided below. If I am not wrong, Can anyone sug
Rsym.
Fred.
> Message du 21/01/10 19:40
> De : "james09 pruza"
> A : CCP4BB@JISCMAIL.AC.UK
> Copie à :
> Objet : [ccp4bb] R-sym and R-merge
>
> Dear All CCP4bbers,
>
> Please help me in finding *R-sym I *(observed), *R-merge I*(obseved), *R-Free
> Er
Dear All CCP4bbers,
Please help me in finding *R-sym I *(observed), *R-merge I*(obseved), *R-Free
Error i*n the data provided below. If I am not wrong, Can anyone suggest me
the difference between R-sym and R-merge?
Thanks in advance for the help.
James*
*
R-values of internal consistency :
==
