NAME

       xfm2def - convert a MNI transform file to a deformation volume

SYNOPSIS

       xfm2def [options] input.xfm def_vol.mnc

DESCRIPTION

       xfm2def  takes  an  input transform input.xfm that can consist of a series of concatenated
       transforms in a single xfm file and converts this into a single deformation volume that is
       output  as  def_vol.mnc.  Note that the output is not a tranform file itself, you can then
       make use of this volume in a MINC tranform by creating an .xfm file as such:

          MNI Transform File

          Transform_Type = Grid_Transform;
          Displacement_Volume = def_vol.mnc;

       The output resolution and sampling of the deformation grid must be specified or a  default
       size will be used. (100x100x100 1mm steps centred around the origin).

OPTIONS

       -help  Print summary of command-line options and exit.

       -version
              Print the program's version number and exit.

       -verbose
              Print out extra progress information while running.

       -clobber
              Overwrite any existing output file

       -xnelements nx
              Number of elements along the xspace dimension.

       -ynelements ny
              Number of elements along the yspace dimension.

       -znelements nz
              Number of elements along the zspace dimension.

       -xstep xstep
              Step between voxels along the xspace dimension.

       -ystep ystep
              Step between voxels along the yspace dimension.

       -zstep zstep
              Step between voxels along the zspace dimension.

       -xstart xstart
              Position of centre of first voxel along the xspace dimension.

       -ystart ystart
              Position of centre of first voxel along the yspace dimension.

       -zstart zstart
              Position of centre of first voxel along the zspace dimension.

       -xdircos x1 x2 x3
              Direction cosines for the xspace dimension.

       -ydircos y1 y2 y3
              Direction cosines for the yspace dimension.

       -zdircos z1 z2 z3
              Direction cosines for the zspace dimension.

AUTHOR

       Andrew Janke

COPYRIGHTS

       Copyright © 2010 Andrew Janke - a.janke@gmail.com

                                   $Date: 2010-08-11 04:06:42 $                        XFM2DEF(1)