On Wed, 2007-02-14 at 07:59 -0800, mac minista wrote:
> Dear all,
>
> I have noticed that going from refmac 5 (script) to generate fo-fc and
> 2fo-fc maps in O / Pymol once and Coot in the other, the outcome is
> not exactly the same electron density maps-I mean some differences are
> seen. I have used the following columns in Coot (latest version):
> FOFCWT, PHFOFCWT and 2FOFCWT, PH2FOFCWT. The .o map file was
> generated using FFT, MAPMASK and MAPMAN.
> I want to know why I am not getting identical maps, and if there is a
> solution to avoid this problem then I would really appreciate your
> help.
Well, the devil is in the detail.
a MAPMAN map in O vs a REFMAC MTZ in Coot. Somewhat apples and oranges.
Stating the obvious: the griding and contour level may well be
different. The contouring algorithms certainly are.
How about a Coot/Refmac + Mapman map in O
or a
MAPMAN map in Coot?
Then the differences will be more clear?
What do you get if you overlapmap
ADD 1 -1
and look at differences there?
|