Dear SPM experts,
I used imcalc in som8 to combine 14 ROIs with the following formula
i1+i2*2+i3*3+i4*4+i5*5+i6*6+i7*7+i8*8+i9*9+i10*10+i11*11+i12*12+i13*13+i14*14
The formula should combine all 14 ROIs in one file but still separate 14 ROIs in that file.
However, I found that some ROIs were merged. For instance, when I selected ROI 5, the number actually contained ROI4 and ROI5. I was confused because I thought the formula only linearly combined ROIs in one file rather than merged than as one anatomical blob. Could someone tell me how to solve the problem? Thanks!
Sincerely,
Veda
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