Dear Hellen,
It might be an issue with the degrees of freedom. How many subjects do
you have and what type of design have you specified?
Best regards,
Guillaume.
On 07/06/18 13:05, Hellen Mathei Della-Justina wrote:
> Dear SPM experts,
>
> I'm running a 2nd-level analysis. I uploaded the con_*.img images and the design matrix could be created correctly. But when I run the estimate process it appears the following error:
>
> Error using gammaln
> Input must be nonnegative.
> Error in spm_ECdensity (line 70)
> EC(4,:) = a^(3/2)*exp(gammaln((v+k-3)/2)-b)...
> Error in spm_P_RF (line 63)
> EC = spm_ECdensity(STAT,Z,df);
> Error in spm_uc_peakFDR (line 83)
> [P,p,Eu] = spm_P_RF(1,0,ui,df,STAT,R,n);
> Error in spm_getSPM (line 761)
> [up,Pp] = spm_uc_peakFDR(0.05,df,STAT,R,n,Zum,XYZum,u);
> Error in spm_results_ui
>
> Error while evaluating UIControl Callback
>
> What is possible to do to fix it?
>
> Thanks in advance,
>
> Hellen
>
--
Guillaume Flandin, PhD
Wellcome Centre for Human Neuroimaging
University College London
12 Queen Square
London WC1N 3BG
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