You can simply find all the NaNs and change them to 0.
idx = find(isnan(data));
data(idx) = 0;
This might be helpful.
JR
On 2005/5/24, at 上午 11:25, Daniel Kelly (AKA Jack) wrote:
> Dear SPM community,
>
> Whilst trying to develop a new script to specify my model in SPM2,
> I keep running into this error message (the line at the top is the
> line in my script which causes the problem):
>
> >> SPM.xCon(c+n_defCntr) = spm_FcUtil('Set',c_name
> {c},'T','c',c_wgt{c},SPM.xX.xKXs)
> Output from spm_FcUtil.m line 879:
>
> c =
>
> 0
> 0
> 0
> 0
> 0
> 0
> 0
> 0
> 0
> 1
> 0
>
> ------------
> Output from spm_FcUtil.m line 880:
>
> c =
>
> 0
> 0
> 0
> 0
> 0
> 0
> 0
> 0
> NaN
> 1
> 0
>
> ------------
> ??? Error using ==> svd
> NaN or Inf prevents convergence.
>
> Error in ==> rank at 15
> s = svd(A);
>
> Error in ==> spm_FcUtil>sf_is_T at 886
> if rank(c) > 1 | any(any(c'*c < 0)), boul = 0; end;
>
> Error in ==> spm_FcUtil at 210
> if Fc.STAT=='T' & ~sf_is_T(sX,c)
>
> Weirdly, this problem is intermittent. If I run the command at the
> top of this code-dump over and over again, I get this error message
> about half the time, even though all the inputs are the same.
>
> I've been using this batch script for several months without any
> problems. It's only recently that it's started to play up. The
> only difference between my error-prone batch script and my previous
> batch scripts is the number of regressors and contrasts. This new,
> error-prone batch script has 10 regressors.
>
> Anyone got any clever ideas? Please? All advice will be very
> greatfully received.
>
> I'm using SPM_devel from about a month ago, running on Matlab 7SP2
> on Gentoo Linux. My MEX files are re-compiled using ICC for my P4.
>
> Many thanks,
> Jack
> =====================================
> Jack Kelly
> nickname = Jack
> birthname = Daniel
>
> PhD Student
> Institute of Cognitive Neuroscience
> University College London
>
> www.XLK.org.uk
> =====================================
