afni.nimh.nih.gov

Dear AFNI users,

I'm looking for a way to compute an NxM (rectangular) correlation matrix - meaning that I would like to compute a correlation score (based on timeseries) for each voxel of a given brain area (containing 503 voxels) with the rest of the brain (whole brain mask).

I tried to use 3dNetCorr or @ROI_Corr_Mat but it seems that these programs only deal with NxN matrices. Am I wrong?
Would anyone have an idea to suggest me?

Thank you in advance for any help!

Carole