Hi Chris,
using the script in attachment this will do the job -
it's a general ROI extraction function based on the VOI button ;
copy/paste in a folder with the same name and move this into the
spm/toolbox folder
then as usual, select a contrast, surf the result table, once a cluster
selected call this function via the toolbox menu ..
best
cyril
> Dear SPM users,
>
> I’d like to extract some data from some ANOVA results, in which I’m
> comparing 3 groups of subjects, using the ‘eigenvariate’ (VOI) function.
> There is no problem doing this when my 3 groups are the same size, but if
> they differ in size I get an error. This seems strange because it has no
> problem handling the stats with 3 unequal group sizes, just extracting the
> data. Have you come across this problem before, and do you know of a
> solution?
>
> Here's the error I get:
> ___________
> ??? Error using ==> mtimes
> Inner matrix dimensions must agree.
>
> Error in ==> spm_regions at 183
> y = spm_filter(SPM.xX.K,SPM.xX.W*y);
>
> ??? Error using ==> [Y,xY] = spm_regions(xSPM,SPM,hReg)
> Error using ==> mtimes
> Inner matrix dimensions must agree.
>
> ??? Error while evaluating uicontrol Callback
> ____________
>
> Many thanks,
> Chris
>
>
>
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