Using Workbench Command

Workbench Command is a set of command-line tools that can be used to perform simple and complex operations within Connectome Workbench.

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   wb_command -volume-warpfield-affine-regression
      <warpfield> - the input warpfield
      <affine-out> - output - the output affine file

      [-roi] - only consider voxels within a mask (e.g., a brain mask)
         <roi-vol> - the mask volume

      [-fnirt] - input is a fnirt warpfield
         <source-volume> - the source volume used when generating the fnirt

      [-flirt-out] - write output as a flirt matrix rather than a world
         coordinate transform
         <source-volume> - the volume you want to apply the transform to
         <target-volume> - the target space you want the transformed volume to

      For all voxels in the warpfield, do a regression that predicts the
      post-warp coordinate from the source coordinate.  When -roi is specified,
      only consider voxels with a value greater than 0 in <roi-vol>.

      The default is to expect the warpfield to be in relative world
      coordinates (mm space), and to write the output as a world affine (mm
      space to mm space).  If you are using FSL-created files and utilities,
      specify -fnirt and -flirt as needed, as their coordinate conventions are