vectorstats¶

Synopsis¶

Statistical testing of vector data using non-parametric permutation testing

Usage¶

vectorstats [ options ]  input design contrast output

input: a text file listing the file names of the input subject data
design: the design matrix. Note that a column of 1’s will need to be added for correlations.
contrast: the contrast vector, specified as a single row of weights
output: the filename prefix for all output.

Options¶

Options for permutation testing¶

-notest don’t perform permutation testing and only output population statistics (effect size, stdev etc)
-nperms num the number of permutations (Default: 5000)
-permutations file manually define the permutations (relabelling). The input should be a text file defining a m x n matrix, where each relabelling is defined as a column vector of size m, and the number of columns, n, defines the number of permutations. Can be generated with the palm_quickperms function in PALM (http://fsl.fmrib.ox.ac.uk/fsl/fslwiki/PALM). Overrides the nperms option.

Standard options¶

-info display information messages.
-quiet do not display information messages or progress status.
-debug display debugging messages.
-force force overwrite of output files. Caution: Using the same file as input and output might cause unexpected behaviour.
-nthreads number use this number of threads in multi-threaded applications (set to 0 to disable multi-threading)
-failonwarn terminate program if a warning is produced
-help display this information page and exit.
-version display version information and exit.

Author: Robert E. Smith (robert.smith@florey.edu.au)

This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, you can obtain one at http://mozilla.org/MPL/2.0/.

MRtrix is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

For more details, see http://www.mrtrix.org/.