Great, thanks for your answer.

Le 22/10/2015 17:42, Douglas N Greve a écrit :
> No, we will continue to support it
>
> On 10/21/2015 11:13 PM, Mathieu Dubois wrote:
>> Hi again,
>>
>> Another advantage of using qcache in my case is that the file names are
>> automatically generated and therefore standard.
>>
>> Is there any risk (particularly for future compatibility) in using
>> qcache? Did anyone had some problem with it?
>>
>> Thanks in advance,
>> Mathieu
>>
>> Le 21/10/2015 18:07, Mathieu Dubois a écrit :
>>> Hi Doug,
>>>
>>> Thanks for your answer.
>>>
>>> If I understand correctly, the tutorial describes the use of
>>> mris_preproc with a group description file. If the data has not been
>>> cached, it will compute them and stack all the results in a big file
>>> (will it write individual files?) . Of course if the data has been
>>> cached, it will only stack them (this probably result in more disk usage
>>> but that's OK).
>>>
>>> I don't plan to use FreeSurfer's linear model for group analysis (my
>>> goal is to use those data in machine learning algorithms) but other
>>> people at the institute I work for may be interested in that. I think
>>> it's more convenient to have one file per subject (so I can group them
>>> in a more flexible way).
>>>
>>> So I guess I can always run recon-all for each subject with -qcache (I
>>> have read that is safe to do so) in order to generate the data for each
>>> subject (this can easily be distributed across a cluster and compute
>>> several measures). I can then load the data for each subject and people
>>> interested into running FreeSurfer group analysis can also use them. Is
>>> it correct?
>>>
>>> My only concern is: will -qcache be supported in future versions of
>>> FreeSurfer? Couldn't some part of it (like the resampling on the average
>>> subject but no the smoothing) be integrated into -all?
>>>
>>> Mathieu
>>>
>>> Le 21/10/2015 16:37, Douglas Greve a écrit :
>>>> Hi Mathieu, look at the group analysis tutorial on our wiki. Basically,
>>>> you will run mris_preproc, mri_surf2surf to smooth, then mri_glmfit to
>>>> do the group analysis, then mri_glmfit-sim to do the correction for
>>>> multiple comparisons.
>>>> doug
>>>>
>>>> On 10/21/15 10:15 AM, Mathieu Dubois wrote:
>>>>> Hi,
>>>>>
>>>>> I'm a beginner with freesurfer so I apologize if it's a trivial question.
>>>>>
>>>>> I recently run recon-all with the -all on many subjects. As far as I can
>>>>> say, all the steps worked. However, the measures on the average brain
>>>>> (output of mris_preproc and friends) were not computed.
>>>>>
>>>>> A colleague told me that he usually re-run recon-all with the -qcache
>>>>> flag to compute those. This seems to work but I don't understand if it
>>>>> is the recommended way to run mris_preproc and why it is not included
>>>>> with -all. Is it possible to get those measures in one call to recon-all?
>>>>>
>>>>> I don't think that the issue comes from the data (e.g. that the failing
>>>>> of a step stops some branch of the pipeline) because it seems to run
>>>>> correctly with -qcache.
>>>>>
>>>>> I haven't found any help on -qcache and the help of recon-all doesn't
>>>>> mention mris_preproc or mri_surf2surf.
>>>>>
>>>>> Thanks in advance,
>>>>> Mathieu
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>>>>>
>>>>>
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