Hello，
I want to use 3dTcorrMap to calcualte the global connectivity.
Given that mixed positive and negative value could cancel each other( eg average 0.1 and -0..1). so I want to average positive correaltion and negative correlation separately.
3dTcorrMap -input input_data -mask mask_data -Cexpr 'step(z-0)*z' output_data ( for Zmean)
3dTcorrMap -input input_data -mask mask_data -Cexpr 'step(r-0)*r' output_data (for rmean)
Is this right for postive correlation?
how to analysis the negative correlation?
Thank you so much!
Best,
jinsong
