Hi,
You only need the first column of your design matrix. first_utils will
automatically demean the EVs (hence the added column of ones in the
output). If you looked at the output though, under "new design matrix",
the first column is the sum of the second and third, this is causing the
singular exception.
cheers,
brian
> Hi,
>
> The commandline inputs for vertex analysis used were:
>
> first_utils --vertexAnalysis --usebvars -i L_Caudate_all.bvars -d
> design.mat
> -o L_Caudate_all --useReconMNI
>
>
> The error message:
> model loaded
> done recon and reg
> new design matrix
> 1 0.5 -0.5
> 1 0.5 -0.5
> 1 0.5 -0.5
> 1 0.5 -0.5
> 1 0.5 -0.5
> 1 0.5 -0.5
> 1 0.5 -0.5
> 1 0.5 -0.5
> 1 0.5 -0.5
> 1 0.5 -0.5
> 1 0.5 -0.5
> 1 0.5 -0.5
> 1 -0.5 0.5
> 1 -0.5 0.5
> 1 -0.5 0.5
> 1 -0.5 0.5
> 1 -0.5 0.5
> 1 -0.5 0.5
> 1 -0.5 0.5
> 1 -0.5 0.5
> 1 -0.5 0.5
> 1 -0.5 0.5
> 1 -0.5 0.5
> 1 -0.5 0.5
> evs 1
> set hsape Mesh
> 1 0 0
> 0 0 1
> do mvglm
> terminate called after throwing an instance of 'NEWMAT::SingularException'
>
>
> Design.mat:
>
> /NumWaves 2
> /NumPoints 24
> /PPheights 1 1
> /Matrix
> 1 0
> 1 0
> 1 0
> 1 0
> 1 0
> 1 0
> 1 0
> 1 0
> 1 0
> 1 0
> 1 0
> 1 0
> 0 1
> 0 1
> 0 1
> 0 1
> 0 1
> 0 1
> 0 1
> 0 1
> 0 1
> 0 1
> 0 1
> 0 1
>
> Is there anything wrong with the design file or the commandline inputs?
>
> Thank you,
>
> Anastasia
>
>
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