map scaling: sigma or volume scaled
map scaling can be defined: sigma or volume scaled Maybe another dumb question, but what is volume scaling? For 2mFo-DFc and mFo-DFc maps. Thanks, Ed
Hi Ed, volume scaling - simply normalizing map coefficients by unit cell volume (as opposed to normalizing by standard deviations, which "sigma scaling"). Pavel On 3/6/13 7:43 PM, Edward A. Berry wrote:
map scaling can be defined: sigma or volume scaled
Maybe another dumb question, but what is volume scaling? For 2mFo-DFc and mFo-DFc maps.
Thanks, Ed _______________________________________________ phenixbb mailing list [email protected] http://phenix-online.org/mailman/listinfo/phenixbb
Pavel Afonine wrote:
Hi Ed,
volume scaling - simply normalizing map coefficients by unit cell volume (as opposed to normalizing by standard deviations, which "sigma scaling").
Pavel
Does that mean the map values will be in electrons/A**3? (Apart from the zero-average offset due to no Fooo term?)
On 3/6/13 7:43 PM, Edward A. Berry wrote:
map scaling can be defined: sigma or volume scaled
Maybe another dumb question, but what is volume scaling? For 2mFo-DFc and mFo-DFc maps.
Thanks, Ed _______________________________________________ phenixbb mailing list [email protected] http://phenix-online.org/mailman/listinfo/phenixbb
Yes, but F000 is not included. Pavel On 3/6/13 8:04 PM, Edward A. Berry wrote:
Pavel Afonine wrote:
Hi Ed,
volume scaling - simply normalizing map coefficients by unit cell volume (as opposed to normalizing by standard deviations, which "sigma scaling").
Pavel
Does that mean the map values will be in electrons/A**3? (Apart from the zero-average offset due to no Fooo term?)
On 3/6/13 7:43 PM, Edward A. Berry wrote:
map scaling can be defined: sigma or volume scaled
Maybe another dumb question, but what is volume scaling? For 2mFo-DFc and mFo-DFc maps.
Thanks, Ed _______________________________________________ phenixbb mailing list [email protected] http://phenix-online.org/mailman/listinfo/phenixbb
Thanks, Pavel! Pavel Afonine wrote:
Yes, but F000 is not included.
Pavel
On 3/6/13 8:04 PM, Edward A. Berry wrote:
Pavel Afonine wrote:
Hi Ed,
volume scaling - simply normalizing map coefficients by unit cell volume (as opposed to normalizing by standard deviations, which "sigma scaling").
Pavel
Does that mean the map values will be in electrons/A**3? (Apart from the zero-average offset due to no Fooo term?)
On 3/6/13 7:43 PM, Edward A. Berry wrote:
map scaling can be defined: sigma or volume scaled
Maybe another dumb question, but what is volume scaling? For 2mFo-DFc and mFo-DFc maps.
Thanks, Ed _______________________________________________ phenixbb mailing list [email protected] http://phenix-online.org/mailman/listinfo/phenixbb
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Pavel Afonine