You can't do that with a contrast matrix. In general, you can't test
"ANDs" with a contrast, you have to test "ORs". For AND, you have to use
a conjunction in which you make two contrasts A > B and B > C, threshold
both (mri_binarize), then do a logical AND.
doug
Feng-Xian wrote:
Hi,
I want to analysis three independence groups. And, I want to display a
result of A group > B group > C group with positive(red) and A group < B
group < C group with negative(blue). To show that, how do I write the number
of columns in the contrast matrix?
Thank you in advance!
Feng-Xian
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