Re: [ccp4bb] contour map

2011-02-01 Thread Nicholas M Glykos
Hi Leila, What feels like two centuries ago, we had written a program that would read a ccp4 map and produce a postscript plot containing both contours and a dithered grayscale representation of the map. This is useful for complex projections like the one shown in [1]. The program (mcps) is sti

Re: [ccp4bb] Counting of geometrical restraints?

2011-02-01 Thread Pete Meyer
Ian, Now it's still true that Ncon reduces Npar but it's no longer true that Ncon increases Nobs. This seems counter-intuitive enough for me to ask a stupid question: which parameters are being removed in restrained refinement? For constraints this seems straightforward (transformation of >

Re: [ccp4bb] contour map

2011-02-01 Thread Adam Ralph
Dear Leila, The CCP4 program FFT, which generates 3D maps from reflection data can also produce projections. Use the keyword PROJECTION. It will only give projections down an axis but if the X-ray SG is trigonal then you will be OK. Another CCP4 prog MAPSLICER can be used to view the map. Adam

Re: [ccp4bb] Counting of geometrical restraints?

2011-02-01 Thread Ian Tickle
Hi Pete Not sure what you mean by 'which parameters'. We're talking here about the total parameter _count_ and its effect on the statistics, i.e. R factors etc. You can't relate a specific parameter to a specific restraint. The statistics behave in exactly the same way as they would if you did

[ccp4bb] Neutron Protein Crystallography Call for Proposals

2011-02-01 Thread Paul Langan
PROTEIN CRYSTALLOGRAPHY STATION AT LANSCE -- CALL FOR PROPOSALS for Run Cycle Beginning the June 2011 You are invited to apply for beam time on the neutron Protein Crystallography Station (PCS) at the Los Alamos Neutron Science Center. The

[ccp4bb] Postdoctoral position Greifswald/Germany

2011-02-01 Thread palm
Dear All, In the group of Winfried Hinrichs a postdoctoral position is available for initially 3 years. The position involves research and teaching. Knowledge in German is not mandatory but is helpful. You need at least enough to read the official posting of the university regarding this posit

[ccp4bb] inverse beam integration/scaling protocol

2011-02-01 Thread Francis E Reyes
Hi all Is there a walkthru/tutorial for processing inverse beam images with imosflm/scala? Googling a few things didn't get me anywhere. Thanks! F - Francis E. Reyes M.Sc. 215 UCB University of Colorado at Boulder gpg --keyserver pgp.mit.edu --r