MRCX(1)                     General Commands Manual                    MRCX(1)



NAME
       mrcx - Convert MRC files between different operating systems


SYNOPSIS
       mrcx [-vms|-ieee] filename [optional_output_filename]

DESCRIPTION
       Numbers are stored on computers in two different orders, termed "lit-
       tle-endian" (as on Windows and Linux PCs and Macs with Intel proces-
       sors) and "big-endian" (as on Macs with PowerPC processors and some
       older machines).  Moreover, Unix machines store floating-point numbers
       in IEEE format, while VMS machines stored them in a slightly different
       format.  Mrcx can convert MRC image files from one machine's format to
       another by swapping bytes and, when necessary, converting the format of
       the floating-point numbers.

       The type of data conversion is specified with the -vms or -ieee option.
       (The "Usage" statement issued by entering mrcx without arguments will
       indicate which is the default, probably ieee).  Namely, -vms will con-
       vert files between VMS format and big-endian Unix format, while -ieee
       will convert files between little-endian and big-endian Unix formats.

       If an output filename is given, then the converted data are written to
       a new file; otherwise they are written back into the input file.  Con-
       version is completely reversible, so if an erroneous command is given
       to convert a file in place, just issue the same command to undo it.


AUTHORS
       Ross Dargahi, Jim Kremer, and David Mastronarde


BUGS
       Extra data in the extended image header are converted as short inte-
       gers, which works for data from SerialEM but not for extended headers
       in the FEI/Agard format.

       Conversion to and from VMS format is available only on big-endian
       machines.

       There is no longer an attempt to write a new title for the conversion.

       Email bug reports to mast at colorado dot edu.



IMOD                                 5.2.0                             MRCX(1)