All MTZ (and map) files from the very beginning had an architecture-dependent 'machine-stamp' in the header which *should* cause the read routines to do the necessary conversions if needed (i.e. where the writing & reading machine formats differ). This was absolutely necessary in the days when we had a goodly mix of formats (VAX, Convex, Cray, SGI, IBM mainframe, IBM PC, Mac ...). Now pretty well everything is Intel or compatible, i.e. little-endian IEEE format, so this functionality hasn't been real-world tested for aeons and it's possible in the meantime that it's fallen into disrepair.
Cheers -- Ian On Fri, 9 Nov 2018 at 18:57, Ethan A Merritt <merr...@u.washington.edu> wrote: > On Friday, November 9, 2018 9:12:36 AM PST Robert Esnouf wrote: > > > > Without checking further, there is a "dd" option for swapping big-endian > to little-endian... swab. This may simply be the issue... > > DEC computers used a different floating point format. > Swapping endian-ness would be sufficient, although it might be required in > addition. > > Ethan > > > > > > The output of od -x may help decode the header of the file... > > > > Regards, > > Robert > > > > -- > > > > Dr Robert Esnouf > > > > University Research Lecturer, > > Director of Research Computing BDI, > > Head of Research Computing Core WHG, > > NDM Research Computing Strategy Officer > > > > Main office: > > Room 10/028, Wellcome Centre for Human Genetics, > > Old Road Campus, Roosevelt Drive, Oxford OX3 7BN, UK > > > > Emails: > > rob...@strubi.ox.ac.uk / rob...@well.ox.ac.uk / > robert.esn...@bdi.ox.ac.uk > > > > Tel: (+44)-1865-287783 (WHG); (+44)-1865-743689 (BDI) > > > > > > -----Original Message----- > > From: "Pavel Afonine" <pafon...@gmail.com> > > To: CCP4BB@JISCMAIL.AC.UK > > Date: 09/11/18 13:54 > > Subject: Re: [ccp4bb] VERY old mtz file.. > > > > Now I see the value of storing data in plain text files even more (mind > Shelx or X-plor formats, for example) -;) > > > > > > <Sorry for helpless comment. Couldn't resist as I've never liked > non-human readable files.> > > > > On Fri, Nov 9, 2018 at 9:47 PM Clemens Vonrhein < > vonrh...@globalphasing.com> wrote: > > > > Hi Eleanor, > > > > You could try running the oldest MTZ2VARIOUS binary you can find - > > e.g. > > > > wget ftp://ftp.ccp4.ac.uk/ccp4/4.2/binaries/ccp4-4.2_Linux.tar.gz > > tar -xvf ccp4-4.2_Linux.tar.gz bin/mtz2various > > > > bin/mtz2various hklin ... > > > > Any older binaries (ftp://ftp.ccp4.ac.uk/ccp4/4.0.1/) will require an > > SGI or Dec/Alpha machine ;-) > > > > If that doesn't help I would first check that it is actually a correct > > MTZ file: does the ASCII header (trailer) show up with > > > > strings your.mtz > > > > towards the end? > > > > Cheers > > > > Clemens > > > > On Fri, Nov 09, 2018 at 12:47:09PM +0000, Eleanor Dodson wrote: > > > Anyone any idea what to do about this?? Created in 1992!! > > > Seems unreadable.. > > > > > > No CTYP lines input for file: 1 > > > Indices output even if all data items flagged "missing" > > > Warning, NOT all LABOUT data lines given > > > Warning: Machine stamp corrupted? Assuming native format. > > > >>>>>> CCP4 library signal library_file:End of File (Error) > > > > > > > ######################################################################## > > > > > > To unsubscribe from the CCP4BB list, click the following link: > > > https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1 > > > > -- > > > > *-------------------------------------------------------------- > > * Clemens Vonrhein, Ph.D. vonrhein AT GlobalPhasing DOT com > > * Global Phasing Ltd., Sheraton House, Castle Park > > * Cambridge CB3 0AX, UK www.globalphasing.com > > *-------------------------------------------------------------- > > > > ######################################################################## > > > > To unsubscribe from the CCP4BB list, click the following link: > > https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1 > > > > > > > > To unsubscribe from the CCP4BB list, click the following link: > > https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1 > > > > > > > > ######################################################################## > > > > To unsubscribe from the CCP4BB list, click the following link: > > https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1 > > > -- > Ethan A Merritt > Biomolecular Structure Center, K-428 Health Sciences Bldg > MS 357742, University of Washington, Seattle 98195-7742 > > ######################################################################## > > To unsubscribe from the CCP4BB list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1 > ######################################################################## To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=CCP4BB&A=1
