fmri_corrvoldata
================

.. currentmodule:: fmri_toolbox

Description
-----------
FMRI_CORRVOLDATA  Voxelwise Pearson correlation between two fMRI datasets.
Computes the temporal correlation between two fMRI time series at each
voxel independently, producing a voxelwise r-map. Both datasets must
have the same number of voxels and the same number of time points.

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

    c = fmri_corrvoldata(d1, d2)

Inputs
------
- D1, D2  - fMRI time series, both vectorized (228453 x T). Each row is a voxel; each column a time point.

Outputs
-------
- **C**: Voxelwise correlation map (228453 x 1). Values in [-1, 1].

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

    c = fmri_corrvoldata(run1, run2);
    fmri_showslices(c, 1, 2, [-1 1])
    % Correlation between rest and task
    c = fmri_corrvoldata(rest_data, task_data);

See Also
--------
- fmri_corregressor
- fmri_simmat
- fmri_rv