: [ccp4bb] Definition of Fourier coefficients
Yup, refmac too.
Pavel Afonine wrote:
Not sure for other software, but in phenix.refine you can request to
output I*mFo-J*DFc map, where I and J are any user specified values.
Pavel.
On 7/7/2008 6:00 PM, Meyer, Peter wrote:
It is redundant, but it adds
t;> Meyer, Peter wrote:
>>
>>> Slightly off-topic from the original question, but is there a reason
>>> that most programs don't output D for sigma_a coefficients?
>>>
>>> Pete
>>>
>>>
>>> -Original Message-
>>> From: CCP4 bu
to
calculate something like a 3mFO-2DFc map.
Thanks,
Pete
-Original Message-
From: Kevin Cowtan [mailto:[EMAIL PROTECTED]
Sent: Mon 7/7/2008 10:18 AM
To: Meyer, Peter
Cc: CCP4BB@jiscmail.ac.uk
Subject: Re: [ccp4bb] Definition of Fourier coefficients
Probably because in the classic
map.
Thanks,
Pete
-Original Message-
From: Kevin Cowtan [mailto:[EMAIL PROTECTED]
Sent: Mon 7/7/2008 10:18 AM
To: Meyer, Peter
Cc: CCP4BB@jiscmail.ac.uk
Subject: Re: [ccp4bb] Definition of Fourier coefficients
Probably because in the classic implementation it is redundant, D being
sage-
> From: CCP4 bulletin board on behalf of Mayer, Mark (NIH/NICHD) [E]
> Sent: Sat 7/5/2008 2:39 PM
> To: CCP4BB@JISCMAIL.AC.UK
> Subject: [ccp4bb] Definition of Fourier coefficients
>
> Hi,
>
> What do m and D indicate in the Fourier coefficients for a 2mFo-DFc map?
&g
/NICHD) [E]
Sent: Sat 7/5/2008 2:39 PM
To: CCP4BB@JISCMAIL.AC.UK
Subject: [ccp4bb] Definition of Fourier coefficients
Hi,
What do m and D indicate in the Fourier coefficients for a 2mFo-DFc map?
I've dug a bit in web and CCP4 doc but not found an explanation, though I'm
sure its there.
Thanks,
Mark
rd on behalf of Mayer, Mark (NIH/NICHD) [E]
Sent: Sat 7/5/2008 2:39 PM
To: CCP4BB@JISCMAIL.AC.UK
Subject: [ccp4bb] Definition of Fourier coefficients
Hi,
What do m and D indicate in the Fourier coefficients for a 2mFo-DFc map?
I've dug a bit in web and CCP4 doc but not found an explanation,
bject: [ccp4bb] Definition of Fourier coefficients
Hi,
What do m and D indicate in the Fourier coefficients for a 2mFo-DFc map?
I've dug a bit in web and CCP4 doc but not found an explanation, though I'm
sure its there.
Thanks,
Mark
I remember cuting and pasting on my little board in my cubicle Table I
from Randy Read, Acta Cryst (1986), when I was a graduate student
wondering about sigmaA. It is a table of definitions of terms and
formulas, and helps one conceptually understand the terminology. It is
from before the days
Hi Mark,
for the exact definition look, for example, formula #4 in this paper:
J. Appl. Cryst. (1996). 29, 741-744
For more background look references mentioned there:
(Luzzati, 1953; Main, 1979;Vijayan, 1980; Read, 1986).
Note the essential message in this paper: the values m and D (=alpha)
m
They are SigmaA weighting coefficients. See the sigmaa documentation -
and references there in by Read. (I think the 1986 reference is the
correct one).
Ezra
Mayer, Mark (NIH/NICHD) [E] wrote:
Hi,
What do m and D indicate in the Fourier coefficients for a 2mFo-DFc map?
I've dug a bit in w
Hi,
What do m and D indicate in the Fourier coefficients for a 2mFo-DFc map?
I've dug a bit in web and CCP4 doc but not found an explanation, though I'm
sure its there.
Thanks,
Mark
12 matches
Mail list logo
