Dear Markus,
yes, this should be an 8 cell design. It looks to me as if there is
something wrong with a vector/matrix column or row length. (extra
covariate, mean scaling?)
Volkmar
On Thu, 15 Mar 2007, Markus Burgmer wrote:
> dear simon.
>
> thanks for your advice about performing an anova for my question.
> unfortunately spm5 does not led me design one. maybe you know why?
> i've choosen the full factorial design and defined 2 factors (group (2
> levels) and time (4 levels)). this would be, from my perspective, a 2x4
> design, so i have to specify the con-files (each condition of my second
> session vs baseline condition) for 8 cells ([1 1], [1 2], [1 3], [1 4], [2
> 1], [2 2], [2 3], [2 4]).
> but spm gives me the following error message:
>
> Running "Factorial design specification"
> Error running job:
> Error using ==> spm_meanby
> row dimension mismatch between inputs
>
> did i miss something in the design? is my assumption of 8 cells wrong?
>
> sorry to bother you again.
>
> yours markus
>
>
--
Volkmar Glauche
-
Department of Neurology [log in to unmask]
Universitaetsklinikum Freiburg Phone 49(0)761-270-5331
Breisacher Str. 64 Fax 49(0)761-270-5416
79106 Freiburg http://fbi.uniklinik-freiburg.de/
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