Re: [ccp4bb] phenix.real_space_correlation vs overlapmap

2011-05-10 Thread Eleanor Dodson
This may be too late to be of use, but as one of the authors of the sfall/overlapmap system.. sfall does generate a coded map which flags every grid point with a unique ID of the nearest atom, ie one which is unique providing there are not too many atoms - it is adequate for most molecules tho

Re: [ccp4bb] phenix.real_space_correlation vs overlapmap

2011-05-02 Thread Pavel Afonine
Hi Matt, What I want is the density 'inside' each atom in the map, so that I can make > quantitative comparisons of "how much stuff" is present in a blob (modeled > or not). > that's still ambiguous...: 1) do you want a density value calculated at a point, which may be, for example, a center for

Re: [ccp4bb] phenix.real_space_correlation vs overlapmap

2011-05-02 Thread Matt Warkentin
On Mon, May 2, 2011 at 2:18 PM, James M Holton wrote: > The CCP4 program that makes the "label map" you are looking for is SFALL. > It can be told to make a .map file where each grid point is still a > floating-point number, but instead of the usual electron density it > "encodes" the residue num

Re: [ccp4bb] phenix.real_space_correlation vs overlapmap

2011-05-02 Thread Matt Warkentin
On Mon, May 2, 2011 at 12:53 PM, Pavel Afonine wrote: > Hi Matt, > > > I'm trying to 'measure' the density in a region of my structure by >> integrating the electron density there (notwithstanding errors in F000). I >> understand that both overlapmap and phenix.real_space_correlation compute >>

Re: [ccp4bb] phenix.real_space_correlation vs overlapmap

2011-05-02 Thread James M Holton
The CCP4 program that makes the "label map" you are looking for is SFALL. It can be told to make a .map file where each grid point is still a floating-point number, but instead of the usual electron density it "encodes" the residue number, atom number, etc. The OVERLAPMAP program knows how to de

Re: [ccp4bb] phenix.real_space_correlation vs overlapmap

2011-05-02 Thread Pavel Afonine
Hi Matt, I'm trying to 'measure' the density in a region of my structure by > integrating the electron density there (notwithstanding errors in F000). I > understand that both overlapmap and phenix.real_space_correlation compute > density surrounding individual atoms for their calculations. Is