Hi,
I have a crystal structure at 3A resolution with six copies in the
asu. When I average the map over the ncs I find that the original
2Fo-Fc style map has a sigma of 1.5 at 0.3 e/A^3. When I adjust the
contour level of the averaged map to match, by eye, the level of the
unaveraged map I
Why do you want to quote sigma level anyway? It's more or less meaningless
for the reasons you give. Stick to e/A^3
/flame
Phil
On 22 Dec 2010, at 22:02, Dale Tronrud wrote:
Hi,
I have a crystal structure at 3A resolution with six copies in the
asu. When I average the map over the ncs
When creating an NCS average map, Coot draws a box around the chain of
interest and averages the map inside that. Everywhere else is set to 0.
So inside the box, yes, one might expect the rms value to be a small
amount larger (considering points inside the box). However, most of the
ASU is
Thanks Paul,
I don't know of a perfect solution to the question of rms
for an ncs averaged map. Knowing your imperfect solution
clarifies the results I'm seeing and that helps a lot. I
guess I'm seeing greater anomalies than others because I
have 6-fold ncs and 50% solvent. I take it that
