Your model has 18 timepoints but your data only has 15!
Steve.
On 14 May 2007, at 16:21, Suzanna Laycock wrote:
> Hi Steve,
>
> It says the following:
>
> Suzanna@suzanna ~/FSL_DATA/tbss/stats
> $ avwinfo all_FA_skeletonised
> data_type
> dim1 182
> dim2 218
> dim3 182
> dim4 15
> datatype 16
> pixdim1 -1.0000000000
> pixdim2 1.0000000000
> pixdim3 1.0000000000
> pixdim4 1.0000000000
> cal_max 0.0000
> cal_min 0.0000
> glmax 0
> glmin 0
> origin1 91
> origin2 127
> origin3 73
> file_type ANALYZE-7.5
>
>
> -----Original Message-----
> From: FSL - FMRIB's Software Library
> [mailto:[log in to unmask]] On Behalf Of Steve Smith
> Sent: 11 May 2007 15:19
> To: [log in to unmask]
> Subject: Re: [FSL] randomise
>
>
> What does
> avwinfo all_FA_skeletonised
> say?
>
>
>
> On 11 May 2007, at 14:35, Suzanna Laycock wrote:
>
>> Hi,
>>
>> I'm trying to run the last part of tbss - randomise, and I get the
>> following error message. Any suggestions why? I have 9 control
>> and 9 patient subjects. Below is the design.mat and design.con
>> files.
>>
>> Suzanna@suzanna ~/FSL_DATA/tbss/stats
>> $ design_ttest2 design 9 9
>>
>> Suzanna@suzanna ~/FSL_DATA/tbss/stats
>> $ randomise -i all_FA_skeletonised -o tbss -m mea n_FA_skeleton_mask
>> -d design.mat -t design.con -n 5000 -c 3 -V
>> 48620 permutations required for exhaustive test
>> number of rows in design matrix doesn't match numb
>> er of "time points" in input data!
>>
>>
>> My design.mat is:
>>
>> /NumWaves 2
>> /NumPoints 18
>> /PPheights 1 1
>> /Matrix
>> 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
>>
>> And my design.con is:
>>
>> /NumWaves 2
>> /NumContrasts 2
>> /PPheights 1 1
>> /Matrix
>> 1 -1
>> -1 1
>>
>
>
> ----------------------------------------------------------------
> --------
> ---
> Stephen M. Smith, Professor of Biomedical Engineering
> Associate Director, Oxford University FMRIB Centre
>
> FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
> +44 (0) 1865 222726 (fax 222717)
> [log in to unmask] http://www.fmrib.ox.ac.uk/~steve
> ----------------------------------------------------------------
> --------
> ---
------------------------------------------------------------------------
---
Stephen M. Smith, Professor of Biomedical Engineering
Associate Director, Oxford University FMRIB Centre
FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve
------------------------------------------------------------------------
---
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