help > RE: linear trend as contrast for gPPI
Aug 24, 2017  06:08 AM | Donald McLaren
RE: linear trend as contrast for gPPI
Hi Kevin,

That contrast should work assuming that the columns are correctly aligned. The only thing that needs to be changed is to remove the {} around the contrast. For example, P.Contrasts(1).c=[0 0 0 0 0 0 0 0 0 0 0 0 0 -0.5 0.5 1.5 0 0 0 -1.5];

If this doesn't work, please send me the SPM.mat file and I can try and troubleshoot further.

Best,
Donald
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RE: linear trend as contrast for gPPI
Aug 24, 2017