Hi Anderson,
That did the trick, thank you so much.
Best,
Anders
2014-03-14 21:04 GMT+01:00 Anderson M. Winkler <[log in to unmask]>:
> Hi Anders,
>
> Either don't supply the -e design.grp, or use a design.grp that has a column
> of ones (that is, the "group" column in the GUI should be all 1s).
>
> All the best,
>
> Anderson
>
>
> Am 14.03.14 16:07, schrieb Anders Hougaard:
>
>> Dear all,
>>
>> I am trying to perform a two-sample test between two groups for a VBM
>> study using randomise.
>>
>> My design is as shown in the attached file, the number of subjects in
>> each group is 50, and my input file contains 100 volumes.
>>
>> I use the following command:
>> randomise -i GM_mod_merg_s3.nii.gz -o GM_mod_merg_s3_unpaired -m
>> GM_mask.nii.gz -d design_unpaired.mat -t design_unpaired.con -e
>> design_unpaired.grp -n 5000 -T
>>
>> but Randomise only performs 1 permutation per t-test:
>>
>> Loading Data:
>> Data loaded
>> 1 permutations required for exhaustive test of t-test 1
>> Doing all 1 unique permutations
>> Starting permutation 1 (Unpermuted data)
>> Critical Value for: GM_mod_merg_s3_unpaired_tfce_corrp_tstat1 is: 16061.5
>> 1 permutations required for exhaustive test of t-test 2
>> Doing all 1 unique permutations
>> Starting permutation 1 (Unpermuted data)
>> Critical Value for: GM_mod_merg_s3_unpaired_tfce_corrp_tstat2 is: 7491.47
>> 1 permutations required for exhaustive test of t-test 3
>> Doing all 1 unique permutations
>> Starting permutation 1 (Unpermuted data)
>> Critical Value for: GM_mod_merg_s3_unpaired_tfce_corrp_tstat3 is:
>> 1.37897e+07
>> 1 permutations required for exhaustive test of t-test 4
>> Doing all 1 unique permutations
>> Starting permutation 1 (Unpermuted data)
>> Critical Value for: GM_mod_merg_s3_unpaired_tfce_corrp_tstat4 is:
>> 1.35278e+07
>> Finished, exiting.
>>
>> What is going wrong here?
>>
>> All the best,
>> Anders
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