Provided by: cmtk_3.3.1p2+dfsg-2build1_amd64 bug


       ttest - T-tests


       ttest   [options]  imageX0  [imageX1  ...]  --  imageY0  [imageY1]  ...   ttest  [options]
       --symmetric imageX0 [imageX1 ...]


       Pixelwise tests of statistical significance. Also compute correlations and z-scores


   Global Toolkit Options (these are shared by all CMTK tools)
            Write list of basic command line options to standard output.

            Write complete list of basic and advanced command line options to standard output.

            Write list of command line options to standard output in MediaWiki markup.

            Write man page source in 'nroff' markup to standard output.

            Write toolkit version to standard output.

            Write the current command line to standard output.

       --verbose-level <integer>
            Set verbosity level.

       --verbose, -v
            Increment verbosity level by 1 (deprecated; supported for backward compatibility).

       --threads <integer>
            Set maximum number of parallel threads (for POSIX threads and OpenMP).

   Main Options
       --log, -l
            Use log data for testing

       --abs, -a
            Use absolute data for testing

       --abs-out, -A
            Generate absolute (unsigned) data

       --invert, -i
            Invert data, i.e., subtract from 1.0

       --short, -s
            Convert probabilities to short (and scale by 1000)

       --paired, -p
            Compute paired t-test [default: groupwise]

       --cross-correlation, -c
            Compute paired cross-correlation

       --zscores, -Z
            Compute z-scores of test (y) distribution averages

       --text, -t
            Text file input and output rather than image files.

       --mask <string>, -m <string>
            Mask file name [Default: NONE]

       --outfile <string>, -o <string>
            Output file name [Default: ttest.nii ]

       --tstats-file <string>
            T-statistics output file name (for correlation: p-value output file) [Default: NONE]


       Torsten Rohlfing, with contributions from Michael  P.  Hasak,  Greg  Jefferis,  Calvin  R.
       Maurer, Daniel B. Russakoff, and Yaroslav Halchenko



       Report bugs at


       CMTK is developed with support from the NIAAA under Grant AA021697, National Consortium on
       Alcohol and Neurodevelopment in Adolescence (N-CANDA): Data  Integration  Component.  From
       April  2009  through September 2011, CMTK development and maintenance was supported by the
       NIBIB under Grant EB008381.