3dDeconvolve gltsym for ANOVA

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AFNI version info (afni -ver): 23.1.10

Hello!

I have 4 location conditions in my task and I would like to regress for each location. I was trying something like Location1 -Location2*0.333 -Location3*0.333 -Location4*0.333, but I am getting an error message from my terminal saying ** ERROR: -gltsym: can't match symbolic name 'Location2*0.3333'.

Would there be a way to compute this kind of analysis within my 3dDeconvolve script? Whenever I was running my normal location (without the computation), it worked perfectly.

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Hello,

Yes, the gltsym expressions are not generically arithmetic. The form is a sequence of elements of the form:
[sign][scalar*]symbol

For example, -Location2*0.333 must be written as -0.333*Location2 in order to be properly parsed. For details, please see the notes on 3dDeconvolve -gltsym.

-rick