Re: [ccp4bb] conversion of cyroEM reconstruction from MRC to CCP4 format

2010-07-14 Thread Martyn Winn
oard on behalf of Christoph Best > Sent: Tue 7/13/2010 10:20 PM > To: CCP4BB@JISCMAIL.AC.UK > Subject: Re: [ccp4bb] conversion of cyroEM reconstruction from > MRC to CCP4 format > > Hello, > > we have found that

Re: [ccp4bb] conversion of cyroEM reconstruction from MRC to CCP4 format

2010-07-13 Thread James Holton
the original poster could make their problem maps available?? > > Cheers > Martyn > > -Original Message- > From: CCP4 bulletin board on behalf of Christoph Best > Sent: Tue 7/13/2010 10:20 PM > To: CCP4BB@JISCMAIL.AC.UK > Subject: Re: [ccp4bb] conversion of cyro

Re: [ccp4bb] conversion of cyroEM reconstruction from MRC to CCP4 format

2010-07-13 Thread martyn . winn
version of cyroEM reconstruction from MRC to CCP4 format Hello, we have found that there are some minor issues in MRC files using in Em that can make them unpalatable to the CCP4 map library. You can easily look at header fields in Python - here is a sample program to quickly check some of the m

Re: [ccp4bb] conversion of cyroEM reconstruction from MRC to CCP4 format

2010-07-13 Thread Christoph Best
Hello, we have found that there are some minor issues in MRC files using in Em that can make them unpalatable to the CCP4 map library. You can easily look at header fields in Python - here is a sample program to quickly check some of the more common problems. from struct import * header=

Re: [ccp4bb] conversion of cyroEM reconstruction from MRC to CCP4 format

2010-07-13 Thread Filip Van Petegem
Hello James, You can try the map2map from the SITUS package ( http://situs.biomachina.org/fguide.html) or em2em ( http://www.imagescience.de/em2em/) Cheers Filip Van Petegem On Tue, Jul 13, 2010 at 5:32 AM, James Whittle wrote: > Hi all- > > I'm trying to convert a cryoEM map from FREALIGN f

Re: [ccp4bb] conversion of cyroEM reconstruction from MRC to CCP4 format

2010-07-13 Thread James Holton
It is possible that the map is just too big. You might run into "problems" with file I/O in general if it is bigger than 2 GB. If you have a 64-bit machine with CCP4 completely re-compiled in 64-bit mode, then it "should" be able to read the large files (but I have not had much luck with this

Re: [ccp4bb] conversion of cyroEM reconstruction from MRC to CCP4 format

2010-07-13 Thread Dirk Kostrewa
Hi James, I had similar problems with MRC maps. As a solution, a colleague of mine, working with EM, read the MRC map into SPIDER and saved it as a CCP4 map. That worked for me. Unfortunately, my colleague is absent for some time, and I'm still not familiar with EM software. But maybe, you f

[ccp4bb] conversion of cyroEM reconstruction from MRC to CCP4 format

2010-07-13 Thread James Whittle
Hi all- I'm trying to convert a cryoEM map from FREALIGN for use with various CCP4 programs, or with MAPMAN. Even though the MRC format is derived from the CCP4 map file format, every program I've tried fails to open it, (except for Chimera which displays the map but cannot save it to another form