Are you worried about where it says "Using surf2surf_nnfr()"? There is actually
one one function that performs both kinds of mapping. In this case, it is not
doing the reverse loop. You can reassure yourself by running it with nnfr and
see that it prints out "Surf2Surf: Reverse Loop" (which does not appear with
nnf)
On 10/3/18 7:05 PM, Viessmann, Olivia M. wrote:
Hello,
I am using mri_surf2surf and would like to use the vertex map method nnf
("neighest neighbor, forward only") which according to the --help description
exists and avoids multiple source vertices to be mapped and averaged onto a
single target vertex (crucial to my analysis here). However, when I run this
the output suggests that it is running the nnfr (neighest-neighbor forward and
reverse) method.
Is this a bug or am I misinterpreting the console output?
This is the command and output:
/usr/local/freesurfer/dev/bin/mri_surf2surf --srcsubject 994273 --sval
994273/Results/Orientations/lh_SSangle_depth00_rfMRI_REST1_LR.mgz --trgsubject
fsaverage --mapmethod nnf --o lh_SSangle_depth00_rfMRI_REST1_LR_inFSAv.mgz
--hemi lh
sysname Linux
machine x86_64
user omv4
srcsubject = 994273
srcval = 994273/Results/Orientations/lh_SSangle_depth00_rfMRI_REST1_LR.mgz
srctype =
trgsubject = fsaverage
trgval = lh_SSangle_depth00_rfMRI_REST1_LR_inFSAv.mgz
trgtype =
srcsurfreg = sphere.reg
trgsurfreg = sphere.reg
srchemi = lh
trghemi = lh
frame = 0
fwhm-in = 0
fwhm-out = 0
label-src = (null)
label-trg = (null)
OKToRevFaceOrder = 1
UseDualHemi = 0
Reading source surface reg
/cluster/olivia/Data/994273/T1w/994273/surf/lh.sphere.reg
Loading source data
Reading target surface reg
/cluster/olivia/Data/994273/T1w/fsaverage/surf/lh.sphere.reg
Done
Using surf2surf_nnfr()
Mapping Source Volume onto Source Subject Surface
surf2surf_nnfr: building source hash (res=16).
Surf2Surf: Forward Loop (163842)
Surf2Surf: Dividing by number of hits (163842)
INFO: nSrcLost = 26240
nTrg121 = 163842, nTrgMulti = 0, MnTrgMultiHits = 0
nSrc121 = 78298, nSrcLost = 26240, nSrcMulti = 62974, MnSrcMultiHits = 1.3584
Saving target data
Saving to lh_SSangle_depth00_rfMRI_REST1_LR_inFSAv.mgz
I'd appreciate any suggestions.
Thanks
Olivia
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