What if you specify the output of surf2surf to be a gii file?

On 9/2/13 6:47 AM, Franz Liem wrote:
> Dear Doug,
>
> thank you so much, the fix works great.
> The problem now is that when I mris_convert the newly generated surface to 
> .gii the volume geometry is lost again and the offset reintroduced.
> Is there a way to fix this? I have tried to give mri_surf2surf a register.dat 
> that would correct for the c_ras offset, but that did not work.
>
> Thanks,
> Franz
>
> Am 30.08.2013 um 17:41 schrieb Douglas N Greve:
>
>> Sorry, I'm answering your emails in reverse order. Your command should
>> do what youwant once you use the new version below
>>
>> ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/mri_surf2surf.snowleopard
>>
>> note the --tval-xyz requires an argument (give it the orig.mgz)
>>
>> doug
>>
>>
>> On 08/30/2013 03:51 AM, Franz Liem wrote:
>>> Hi Doug,
>>>
>>> thanks a lot.
>>> I am using Darwin-snowleopard and centos6_x86_64.
>>>
>>> What I am trying to do is to use the white surface as seed for probtrackx. 
>>> Therefore, I would like to reduce the number of vertices and at the same 
>>> time bring the surfaces into a common space (so that vertex x is meaning 
>>> the same thing in all subjects, while respecting the individual 
>>> coordinates). I think my command did this but did not take the c_ras offset 
>>> into account.
>>> Is there a better way to do this.
>>>
>>> Thank you  very much,
>>> Franz
>>>
>>> Am 29.08.2013 um 20:54 schrieb Douglas N Greve:
>>>
>>>> Hi Franz, I just programmed a fix into mri_surf2surf. What platform do
>>>> you use?
>>>>
>>>> As for the shift, you would not expect them to line up. In fact, that
>>>> command line does not make a lot of sense. What it is doing is mapping
>>>> the xyz coordinates in the native space to a new tesselation. The xyz
>>>> coorindates don't change at all. It is surprising that they are as close
>>>> as they are. What are you trying to do?
>>>>
>>>> doug
>>>>
>>>>
>>>> On 08/29/2013 07:41 AM, Franz Liem wrote:
>>>>> Dear Freesurfers,
>>>>>
>>>>> sorry for the bump, but my message seems to have gone unnoticed.
>>>>> Thanks so much for any ideas.
>>>>> Franz
>>>>>
>>>>> Am 22.08.2013 um 13:37 schrieb Franz Liem:
>>>>>
>>>>>> Dear Freesurfers,
>>>>>>
>>>>>> I tried to map a single subject surface to fsaverageX (for the sake of 
>>>>>> demonstration lets take fsaverage6). I did the following:
>>>>>> mri_surf2surf --hemi lh --srcsubject $s --sval-xyz white --trgsubject 
>>>>>> fsaverage6 --tval-xyz --tval ./lh.white.ico6
>>>>>> This produces a surface that seems systematically shifted (see figure). 
>>>>>> Also the newly generated surface does not contain valid geomery 
>>>>>> information (see mris_info print of lh.white and lh.white.ico6). Is 
>>>>>> there a way to fix this?
>>>>>>
>>>>>> Another question: is there a reason why mris_decimate is not included in 
>>>>>> the freesurfer-Darwin-snowleopard-i686-stable-pub-v5.3.0 build
>>>>>>
>>>>>> Any help is very much appreciated.
>>>>>> Best, Franz
>>>>>>
>>>>>>
>>>>>> mris_info $s/surf/lh.white
>>>>>>> SURFACE INFO ========================================
>>>>>>> type        : MRIS_TRIANGULAR_SURFACE=MRIS_ICO_SURFACE
>>>>>>> num vertices: 118611
>>>>>>> num faces   : 237218
>>>>>>> num strips  : 0
>>>>>>> surface area: 77595.6
>>>>>>> AvgVtxArea       0.654202
>>>>>>> AvgVtxDist       0.885026
>>>>>>> StdVtxDist       0.251941
>>>>>>> ctr         : (-33.3535, -11.9536, 42.7693)
>>>>>>> vertex locs : surfaceRAS
>>>>>>> talairch.xfm:
>>>>>>> 1.045  -0.093  -0.014   1.081;
>>>>>>> 0.099   1.095   0.070  -4.263;
>>>>>>> 0.010  -0.083   1.290  -41.092;
>>>>>>> 0.000   0.000   0.000   1.000;
>>>>>>> surfaceRAS to talaraiched surfaceRAS:
>>>>>>> 1.045  -0.093  -0.014   1.177;
>>>>>>> 0.099   1.095   0.070   13.377;
>>>>>>> 0.010  -0.083   1.290  -49.756;
>>>>>>> 0.000   0.000   0.000   1.000;
>>>>>>> talairached surfaceRAS to surfaceRAS:
>>>>>>> 0.949   0.081   0.006  -1.900;
>>>>>>> -0.085   0.902  -0.050  -14.449;
>>>>>>> -0.013   0.058   0.772   37.650;
>>>>>>> 0.000   0.000   0.000   1.000;
>>>>>>> volume geometry:
>>>>>>> extent  : (256, 256, 256)
>>>>>>> voxel   : ( 1.0000,  1.0000,  1.0000)
>>>>>>> x_(ras) : (-1.0000, -0.0000,  0.0000)
>>>>>>> y_(ras) : (-0.0000,  0.0000, -1.0000)
>>>>>>> z_(ras) : ( 0.0000,  1.0000, -0.0000)
>>>>>>> c_(ras) : ( 0.0989,  0.9660,  0.9027)
>>>>>>> ...
>>>>>> mris_info lh.white.ico6
>>>>>>> SURFACE INFO ========================================
>>>>>>> type        : MRIS_TRIANGULAR_SURFACE=MRIS_ICO_SURFACE
>>>>>>> num vertices: 40962
>>>>>>> num faces   : 81920
>>>>>>> num strips  : 0
>>>>>>> surface area: 75477.4
>>>>>>> AvgVtxArea       1.842620
>>>>>>> AvgVtxDist       1.573724
>>>>>>> StdVtxDist       0.523314
>>>>>>> ctr         : (-33.3983, -12.0872, 42.7743)
>>>>>>> vertex locs : surfaceRAS
>>>>>>> volume geometry info is either not contained or not valid.
>>>>>>> ...
>>>>>> <surfPics.png>_______________________________________________
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>>>>>>
>>>>>>
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>>>>> _______________________________________________
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>>>>>
>>>>>
>>>> -- 
>>>> Douglas N. Greve, Ph.D.
>>>> MGH-NMR Center
>>>> gr...@nmr.mgh.harvard.edu
>>>> Phone Number: 617-724-2358
>>>> Fax: 617-726-7422
>>>>
>>>> Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
>>>> FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2
>>>> www.nmr.mgh.harvard.edu/facility/filedrop/index.html
>>>> Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/
>>>>
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>>>
>> -- 
>> Douglas N. Greve, Ph.D.
>> MGH-NMR Center
>> gr...@nmr.mgh.harvard.edu
>> Phone Number: 617-724-2358
>> Fax: 617-726-7422
>>
>> Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
>> FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2
>> www.nmr.mgh.harvard.edu/facility/filedrop/index.html
>> Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/
>>
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