> I would be very much afraid that the only way to get the masks > properly would be to edit them interactively. > I used to do that in the PHASES package by Bill Furey and MapViewX > which is still alive and kicking under the BnP flagship. > > I am pretty sure though that Dr. DVD will be online soon and will > point out the correct succession of MAMA/RAVE/O commands ;-) >
As far as I know, mapview does section by section 2d editing. Unless mapview_x has been updated recently, O is probably less painful for interactively editing masks (although my prefered set of mask editing commands in O have been declared obsolete). Pete > > A. > > On Feb 22, 2007, at 1:08, Jianghai Zhu wrote: > >> Forgot to mention that the NCSs are improper. >> >> >> >> On Feb 21, 2007, at 6:22 PM, Jianghai Zhu wrote: >> >>> Dear all, >>> >>> I have two low resolution (3.8 A) MAD data sets from two different >>> space groups. There are 4 copies of my molecule in one space >>> group and 2 copies in the other. The density-modified maps from >>> these data sets are poor, but still allow me to build a crude >>> model on them. All the domains should be at the right or close to >>> right orientations and positions. I would like to try multi- >>> crystal averaging to improve my maps. Since I already have the >>> model, I used NCSMASK to make 6 masks for the 6 copies of my >>> model. Then I used DMMULTI to perform the multi-crystal >>> averaging. The maps came out of DMMULTI showed great >>> improvement. Some densities were not seen before showed up >>> nicely. However, after I read the manual carefully, I realize >>> that DMMULTI would not take care of the mask overlap. So some >>> regions in my density map between the NCS-related and symmetry- >>> related molecules must be messed up. Could any expert out there >>> give me some suggestions about how to make proper NCS masks for >>> DMMULTI? Thanks at advance. >>> >>> Jianghai >> > > Pete Meyer Fu Lab BMCB grad student Cornell University
