fmri_mirror
===========

.. currentmodule:: fmri_toolbox

Description
-----------
FMRI_MIRROR  Flips a vectorized brain map left-to-right (sagittal mirror).
Flips the brain image along the x-axis (left-right) to produce its
mirror image. Useful for testing laterality or creating symmetric
averages (hemisphere-averaged FC maps, etc.).

Usage
-----
.. code-block:: matlab

    d2 = fmri_mirror(d)

Inputs
------
- **D**: Vectorized brain data (228453 x N) or volume (91 x 109 x 91 x N).

Outputs
-------
- **D2**: Mirror-flipped brain, same format as D.

Examples
--------
.. code-block:: matlab

    d_mirror = fmri_mirror(d);
    bilateral = (d + fmri_mirror(d)) / 2;   % bilateral average

See Also
--------
- fmri_vol2vect
- fmri_vect2vol